Ryan Macnak
dc655d9e1a
Bug: https://github.com/dart-lang/sdk/issues/36342 Bug: https://github.com/dart-lang/sdk/issues/36428 Change-Id: I7a22537b83d500ebb0a764963a789720a64467ca Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/98437 Reviewed-by: Alexander Markov <alexmarkov@google.com>
2390 lines
88 KiB
C++
2390 lines
88 KiB
C++
// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/compiler/frontend/bytecode_reader.h"
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#include "vm/bit_vector.h"
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#include "vm/bootstrap.h"
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#include "vm/class_finalizer.h"
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#include "vm/code_descriptors.h"
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#include "vm/compiler/assembler/disassembler_kbc.h"
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#include "vm/compiler/frontend/bytecode_scope_builder.h"
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#include "vm/constants_kbc.h"
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#include "vm/dart_entry.h"
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#include "vm/longjump.h"
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#include "vm/object_store.h"
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#include "vm/reusable_handles.h"
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#include "vm/timeline.h"
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#if !defined(DART_PRECOMPILED_RUNTIME)
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#define Z (zone_)
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#define H (translation_helper_)
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#define I (translation_helper_.isolate())
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namespace dart {
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DEFINE_FLAG(bool, dump_kernel_bytecode, false, "Dump kernel bytecode");
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namespace kernel {
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BytecodeMetadataHelper::BytecodeMetadataHelper(KernelReaderHelper* helper,
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ActiveClass* active_class)
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: MetadataHelper(helper, tag(), /* precompiler_only = */ false),
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active_class_(active_class) {}
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bool BytecodeMetadataHelper::HasBytecode(intptr_t node_offset) {
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const intptr_t md_offset = GetNextMetadataPayloadOffset(node_offset);
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return (md_offset >= 0);
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}
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void BytecodeMetadataHelper::ReadMetadata(const Function& function) {
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#if defined(SUPPORT_TIMELINE)
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TimelineDurationScope tds(Thread::Current(), Timeline::GetCompilerStream(),
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"BytecodeMetadataHelper::ReadMetadata");
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// This increases bytecode reading time by ~7%, so only keep it around for
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// debugging.
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#if defined(DEBUG)
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tds.SetNumArguments(1);
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tds.CopyArgument(0, "Function", function.ToQualifiedCString());
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#endif // defined(DEBUG)
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#endif // !defined(SUPPORT_TIMELINE)
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switch (function.kind()) {
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case RawFunction::kImplicitGetter:
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function.AttachBytecode(Object::implicit_getter_bytecode());
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return;
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case RawFunction::kImplicitSetter:
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function.AttachBytecode(Object::implicit_setter_bytecode());
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return;
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default: {
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}
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}
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intptr_t code_offset = 0;
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if (function.is_declared_in_bytecode()) {
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code_offset = function.bytecode_offset();
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if (code_offset == 0) {
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return;
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}
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} else {
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const intptr_t node_offset = function.kernel_offset();
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code_offset = GetNextMetadataPayloadOffset(node_offset);
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if (code_offset < 0) {
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return;
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}
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}
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ASSERT(Thread::Current()->IsMutatorThread());
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BytecodeComponentData bytecode_component(
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Array::Handle(helper_->zone_, GetBytecodeComponent()));
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BytecodeReaderHelper bytecode_reader(helper_, active_class_,
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&bytecode_component);
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bytecode_reader.ReadCode(function, code_offset);
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}
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void BytecodeMetadataHelper::ParseBytecodeFunction(
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ParsedFunction* parsed_function) {
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TIMELINE_DURATION(Thread::Current(), CompilerVerbose,
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"BytecodeMetadataHelper::ParseBytecodeFunction");
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const Function& function = parsed_function->function();
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ASSERT(function.is_declared_in_bytecode());
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// No parsing is needed if function has bytecode attached.
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// With one exception: implicit getters and setters have artificial
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// bytecodes, but they are still handled by shared flow graph builder
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// which requires scopes/parsing.
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if (function.HasBytecode() && !function.IsImplicitGetterFunction() &&
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!function.IsImplicitSetterFunction()) {
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return;
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}
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BytecodeComponentData bytecode_component(
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Array::Handle(helper_->zone_, GetBytecodeComponent()));
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BytecodeReaderHelper bytecode_reader(helper_, active_class_,
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&bytecode_component);
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bytecode_reader.ParseBytecodeFunction(parsed_function, function);
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}
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bool BytecodeMetadataHelper::ReadMembers(intptr_t node_offset,
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const Class& cls,
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bool discard_fields) {
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TIMELINE_DURATION(Thread::Current(), Compiler,
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"BytecodeMetadataHelper::ReadMembers");
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ASSERT(node_offset > 0);
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const intptr_t md_offset = GetNextMetadataPayloadOffset(node_offset);
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if (md_offset < 0) {
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return false;
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}
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ASSERT(Thread::Current()->IsMutatorThread());
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BytecodeComponentData bytecode_component(
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Array::Handle(helper_->zone_, GetBytecodeComponent()));
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BytecodeReaderHelper bytecode_reader(helper_, active_class_,
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&bytecode_component);
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AlternativeReadingScope alt(&helper_->reader_, &H.metadata_payloads(),
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md_offset);
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intptr_t members_offset = helper_->reader_.ReadUInt();
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bytecode_reader.ReadMembers(cls, members_offset, discard_fields);
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return true;
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}
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RawObject* BytecodeMetadataHelper::ReadAnnotation(intptr_t annotation_offset) {
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ASSERT(Thread::Current()->IsMutatorThread());
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BytecodeComponentData bytecode_component(
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Array::Handle(helper_->zone_, GetBytecodeComponent()));
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BytecodeReaderHelper bytecode_reader(helper_, active_class_,
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&bytecode_component);
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AlternativeReadingScope alt(&helper_->reader_, &H.metadata_payloads(),
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annotation_offset);
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return bytecode_reader.ReadObject();
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}
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RawLibrary* BytecodeMetadataHelper::GetMainLibrary() {
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const intptr_t md_offset = GetComponentMetadataPayloadOffset();
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if (md_offset < 0) {
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return Library::null();
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}
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BytecodeComponentData bytecode_component(
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Array::Handle(helper_->zone_, GetBytecodeComponent()));
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const intptr_t main_offset = bytecode_component.GetMainOffset();
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if (main_offset == 0) {
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return Library::null();
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}
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BytecodeReaderHelper bytecode_reader(helper_, active_class_,
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&bytecode_component);
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AlternativeReadingScope alt(&helper_->reader_, &H.metadata_payloads(),
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main_offset);
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return bytecode_reader.ReadMain();
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}
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RawArray* BytecodeMetadataHelper::GetBytecodeComponent() {
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RawArray* array = translation_helper_.GetBytecodeComponent();
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if (array == Array::null()) {
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array = ReadBytecodeComponent();
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ASSERT(array != Array::null());
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}
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return array;
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}
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RawArray* BytecodeMetadataHelper::ReadBytecodeComponent() {
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const intptr_t md_offset = GetComponentMetadataPayloadOffset();
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if (md_offset < 0) {
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return Array::null();
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}
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BytecodeReaderHelper component_reader(helper_, nullptr, nullptr);
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return component_reader.ReadBytecodeComponent(md_offset);
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}
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BytecodeReaderHelper::BytecodeReaderHelper(
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KernelReaderHelper* helper,
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ActiveClass* active_class,
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BytecodeComponentData* bytecode_component)
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: helper_(helper),
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translation_helper_(helper->translation_helper_),
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active_class_(active_class),
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zone_(helper_->zone_),
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bytecode_component_(bytecode_component),
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scoped_function_(Function::Handle(helper_->zone_)),
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scoped_function_name_(String::Handle(helper_->zone_)),
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scoped_function_class_(Class::Handle(helper_->zone_)) {}
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void BytecodeReaderHelper::ReadCode(const Function& function,
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intptr_t code_offset) {
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ASSERT(Thread::Current()->IsMutatorThread());
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ASSERT(!function.IsImplicitGetterFunction() &&
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!function.IsImplicitSetterFunction());
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ASSERT(code_offset > 0);
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AlternativeReadingScope alt(&helper_->reader_, &H.metadata_payloads(),
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code_offset);
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const intptr_t flags = helper_->reader_.ReadUInt();
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const bool has_exceptions_table =
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(flags & Code::kHasExceptionsTableFlag) != 0;
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const bool has_source_positions =
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(flags & Code::kHasSourcePositionsFlag) != 0;
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const bool has_nullable_fields = (flags & Code::kHasNullableFieldsFlag) != 0;
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const bool has_closures = (flags & Code::kHasClosuresFlag) != 0;
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const bool has_parameters_flags = (flags & Code::kHasParameterFlagsFlag) != 0;
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const bool has_forwarding_stub_target =
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(flags & Code::kHasForwardingStubTargetFlag) != 0;
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const bool has_default_function_type_args =
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(flags & Code::kHasDefaultFunctionTypeArgsFlag) != 0;
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if (has_parameters_flags) {
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intptr_t num_params = helper_->reader_.ReadUInt();
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ASSERT(num_params ==
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function.NumParameters() - function.NumImplicitParameters());
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for (intptr_t i = 0; i < num_params; ++i) {
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helper_->reader_.ReadUInt();
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}
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}
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if (has_forwarding_stub_target) {
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helper_->reader_.ReadUInt();
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}
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if (has_default_function_type_args) {
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helper_->reader_.ReadUInt();
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}
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intptr_t num_closures = 0;
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if (has_closures) {
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num_closures = helper_->ReadListLength();
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closures_ = &Array::Handle(Z, Array::New(num_closures));
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for (intptr_t i = 0; i < num_closures; i++) {
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ReadClosureDeclaration(function, i);
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}
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}
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// Create object pool and read pool entries.
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const intptr_t obj_count = helper_->reader_.ReadListLength();
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const ObjectPool& pool = ObjectPool::Handle(Z, ObjectPool::New(obj_count));
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{
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// While reading pool entries, deopt_ids are allocated for
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// ICData objects.
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//
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// TODO(alexmarkov): allocate deopt_ids for closures separately
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DeoptIdScope deopt_id_scope(H.thread(), 0);
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ReadConstantPool(function, pool);
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}
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// Read bytecode and attach to function.
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const Bytecode& bytecode = Bytecode::Handle(Z, ReadBytecode(pool));
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function.AttachBytecode(bytecode);
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ASSERT(bytecode.GetBinary(Z) == helper_->reader_.typed_data()->raw());
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ReadExceptionsTable(bytecode, has_exceptions_table);
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ReadSourcePositions(bytecode, has_source_positions);
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if (FLAG_dump_kernel_bytecode) {
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KernelBytecodeDisassembler::Disassemble(function);
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}
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// Initialization of fields with null literal is elided from bytecode.
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// Record the corresponding stores if field guards are enabled.
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if (has_nullable_fields) {
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ASSERT(function.IsGenerativeConstructor());
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const intptr_t num_fields = helper_->ReadListLength();
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if (I->use_field_guards()) {
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Field& field = Field::Handle(Z);
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for (intptr_t i = 0; i < num_fields; i++) {
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field ^= ReadObject();
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field.RecordStore(Object::null_object());
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}
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} else {
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for (intptr_t i = 0; i < num_fields; i++) {
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ReadObject();
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}
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}
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}
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// Read closures.
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if (has_closures) {
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Function& closure = Function::Handle(Z);
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Bytecode& closure_bytecode = Bytecode::Handle(Z);
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for (intptr_t i = 0; i < num_closures; i++) {
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closure ^= closures_->At(i);
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const intptr_t flags = helper_->reader_.ReadUInt();
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const bool has_exceptions_table =
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(flags & Code::kHasExceptionsTableFlag) != 0;
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const bool has_source_positions =
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(flags & Code::kHasSourcePositionsFlag) != 0;
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// Read closure bytecode and attach to closure function.
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closure_bytecode = ReadBytecode(pool);
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closure.AttachBytecode(closure_bytecode);
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ASSERT(bytecode.GetBinary(Z) == helper_->reader_.typed_data()->raw());
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ReadExceptionsTable(closure_bytecode, has_exceptions_table);
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ReadSourcePositions(closure_bytecode, has_source_positions);
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if (FLAG_dump_kernel_bytecode) {
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KernelBytecodeDisassembler::Disassemble(closure);
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}
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}
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}
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}
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void BytecodeReaderHelper::ReadClosureDeclaration(const Function& function,
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intptr_t closureIndex) {
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const int kHasOptionalPositionalParams = 1 << 0;
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const int kHasOptionalNamedParams = 1 << 1;
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const int kHasTypeParams = 1 << 2;
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const intptr_t flags = helper_->reader_.ReadUInt();
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Object& parent = Object::Handle(Z, ReadObject());
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if (!parent.IsFunction()) {
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ASSERT(parent.IsField());
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ASSERT(function.kind() == RawFunction::kImplicitStaticFinalGetter);
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// Closure in a static field initializer, so use current function as parent.
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parent = function.raw();
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}
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String& name = String::CheckedHandle(Z, ReadObject());
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ASSERT(name.IsSymbol());
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const Function& closure = Function::Handle(
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Z, Function::NewClosureFunction(name, Function::Cast(parent),
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TokenPosition::kNoSource));
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closures_->SetAt(closureIndex, closure);
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Type& signature_type =
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Type::Handle(Z, ReadFunctionSignature(
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closure, (flags & kHasOptionalPositionalParams) != 0,
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(flags & kHasOptionalNamedParams) != 0,
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(flags & kHasTypeParams) != 0,
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/* has_positional_param_names = */ true));
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closure.SetSignatureType(signature_type);
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}
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RawType* BytecodeReaderHelper::ReadFunctionSignature(
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const Function& func,
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bool has_optional_positional_params,
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bool has_optional_named_params,
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bool has_type_params,
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bool has_positional_param_names) {
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FunctionTypeScope function_type_scope(this);
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if (has_type_params) {
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ReadTypeParametersDeclaration(Class::Handle(Z), func);
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function_type_type_parameters_ =
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&TypeArguments::Handle(Z, func.type_parameters());
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}
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const intptr_t kImplicitClosureParam = 1;
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const intptr_t num_params =
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kImplicitClosureParam + helper_->reader_.ReadUInt();
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intptr_t num_required_params = num_params;
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if (has_optional_positional_params || has_optional_named_params) {
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num_required_params = kImplicitClosureParam + helper_->reader_.ReadUInt();
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}
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func.set_num_fixed_parameters(num_required_params);
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func.SetNumOptionalParameters(num_params - num_required_params,
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!has_optional_named_params);
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const Array& parameter_types =
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Array::Handle(Z, Array::New(num_params, Heap::kOld));
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func.set_parameter_types(parameter_types);
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const Array& parameter_names =
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Array::Handle(Z, Array::New(num_params, Heap::kOld));
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func.set_parameter_names(parameter_names);
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intptr_t i = 0;
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parameter_types.SetAt(i, AbstractType::dynamic_type());
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parameter_names.SetAt(i, Symbols::ClosureParameter());
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++i;
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AbstractType& type = AbstractType::Handle(Z);
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String& name = String::Handle(Z);
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for (; i < num_params; ++i) {
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if (has_positional_param_names ||
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(has_optional_named_params && (i >= num_required_params))) {
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name ^= ReadObject();
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} else {
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name = Symbols::NotNamed().raw();
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}
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parameter_names.SetAt(i, name);
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type ^= ReadObject();
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parameter_types.SetAt(i, type);
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}
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type ^= ReadObject();
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func.set_result_type(type);
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// Finalize function type.
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type = func.SignatureType();
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type ^= ClassFinalizer::FinalizeType(*(active_class_->klass), type);
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return Type::Cast(type).raw();
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}
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void BytecodeReaderHelper::ReadTypeParametersDeclaration(
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const Class& parameterized_class,
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const Function& parameterized_function) {
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ASSERT(parameterized_class.IsNull() != parameterized_function.IsNull());
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const intptr_t num_type_params = helper_->reader_.ReadUInt();
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ASSERT(num_type_params > 0);
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// First setup the type parameters, so if any of the following code uses it
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// (in a recursive way) we're fine.
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//
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// Step a) Create array of [TypeParameter] objects (without bound).
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const TypeArguments& type_parameters =
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TypeArguments::Handle(Z, TypeArguments::New(num_type_params));
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String& name = String::Handle(Z);
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TypeParameter& parameter = TypeParameter::Handle(Z);
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AbstractType& bound = AbstractType::Handle(Z);
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for (intptr_t i = 0; i < num_type_params; ++i) {
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name ^= ReadObject();
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ASSERT(name.IsSymbol());
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parameter = TypeParameter::New(
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parameterized_class, parameterized_function, i, name, bound,
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/* is_generic_covariant_impl = */ false, TokenPosition::kNoSource);
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type_parameters.SetTypeAt(i, parameter);
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}
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if (!parameterized_class.IsNull()) {
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parameterized_class.set_type_parameters(type_parameters);
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} else if (!parameterized_function.IsFactory()) {
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// Do not set type parameters for factories, as VM uses class type
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// parameters instead.
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parameterized_function.set_type_parameters(type_parameters);
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}
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// Step b) Fill in the bounds of all [TypeParameter]s.
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for (intptr_t i = 0; i < num_type_params; ++i) {
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parameter ^= type_parameters.TypeAt(i);
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bound ^= ReadObject();
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parameter.set_bound(bound);
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}
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}
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void BytecodeReaderHelper::ReadConstantPool(const Function& function,
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const ObjectPool& pool) {
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TIMELINE_DURATION(Thread::Current(), CompilerVerbose,
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"BytecodeReaderHelper::ReadConstantPool");
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// These enums and the code below reading the constant pool from kernel must
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// be kept in sync with pkg/vm/lib/bytecode/constant_pool.dart.
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enum ConstantPoolTag {
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kInvalid,
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kNull, // TODO(alexmarkov): obsolete, remove
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kString, // TODO(alexmarkov): obsolete, remove
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kInt, // TODO(alexmarkov): obsolete, remove
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kDouble, // TODO(alexmarkov): obsolete, remove
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kBool, // TODO(alexmarkov): obsolete, remove
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kArgDesc,
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kICData,
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kStaticICData,
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kStaticField,
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kInstanceField,
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kClass,
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kTypeArgumentsField,
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kTearOff, // TODO(alexmarkov): obsolete, remove
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kType,
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kTypeArguments, // TODO(alexmarkov): obsolete, remove
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kList, // TODO(alexmarkov): obsolete, remove
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kInstance, // TODO(alexmarkov): obsolete, remove
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|
kTypeArgumentsForInstanceAllocation, // TODO(alexmarkov): obsolete, remove
|
|
kClosureFunction,
|
|
kEndClosureFunctionScope,
|
|
kNativeEntry,
|
|
kSubtypeTestCache,
|
|
kPartialTearOffInstantiation, // TODO(alexmarkov): obsolete, remove
|
|
kEmptyTypeArguments,
|
|
kSymbol, // TODO(alexmarkov): obsolete, remove
|
|
kInterfaceCallV1, // TODO(alexmarkov): obsolete, remove
|
|
kObjectRef,
|
|
kDirectCall,
|
|
kInterfaceCall,
|
|
};
|
|
|
|
enum InvocationKind {
|
|
method, // x.foo(...) or foo(...)
|
|
getter, // x.foo
|
|
setter // x.foo = ...
|
|
};
|
|
|
|
const int kInvocationKindMask = 0x3;
|
|
const int kFlagDynamic = 1 << 2;
|
|
|
|
Object& obj = Object::Handle(Z);
|
|
Object& elem = Object::Handle(Z);
|
|
Array& array = Array::Handle(Z);
|
|
Field& field = Field::Handle(Z);
|
|
Class& cls = Class::Handle(Z);
|
|
String& name = String::Handle(Z);
|
|
TypeArguments& type_args = TypeArguments::Handle(Z);
|
|
Class* symbol_class = nullptr;
|
|
Field* symbol_name_field = nullptr;
|
|
const String* simpleInstanceOf = nullptr;
|
|
const intptr_t obj_count = pool.Length();
|
|
for (intptr_t i = 0; i < obj_count; ++i) {
|
|
const intptr_t tag = helper_->ReadTag();
|
|
switch (tag) {
|
|
case ConstantPoolTag::kInvalid:
|
|
UNREACHABLE();
|
|
case ConstantPoolTag::kNull:
|
|
obj = Object::null();
|
|
break;
|
|
case ConstantPoolTag::kString:
|
|
obj = ReadString();
|
|
ASSERT(obj.IsString() && obj.IsCanonical());
|
|
break;
|
|
case ConstantPoolTag::kInt: {
|
|
uint32_t low_bits = helper_->ReadUInt32();
|
|
int64_t value = helper_->ReadUInt32();
|
|
value = (value << 32) | low_bits;
|
|
obj = Integer::New(value, Heap::kOld);
|
|
obj = H.Canonicalize(Integer::Cast(obj));
|
|
} break;
|
|
case ConstantPoolTag::kDouble: {
|
|
uint32_t low_bits = helper_->ReadUInt32();
|
|
uint64_t bits = helper_->ReadUInt32();
|
|
bits = (bits << 32) | low_bits;
|
|
double value = bit_cast<double, uint64_t>(bits);
|
|
obj = Double::New(value, Heap::kOld);
|
|
obj = H.Canonicalize(Double::Cast(obj));
|
|
} break;
|
|
case ConstantPoolTag::kBool:
|
|
if (helper_->ReadByte() == 1) {
|
|
obj = Bool::True().raw();
|
|
} else {
|
|
obj = Bool::False().raw();
|
|
}
|
|
break;
|
|
case ConstantPoolTag::kArgDesc: {
|
|
intptr_t num_arguments = helper_->ReadUInt();
|
|
intptr_t num_type_args = helper_->ReadUInt();
|
|
intptr_t num_arg_names = helper_->ReadListLength();
|
|
if (num_arg_names == 0) {
|
|
obj = ArgumentsDescriptor::New(num_type_args, num_arguments);
|
|
} else {
|
|
array = Array::New(num_arg_names);
|
|
for (intptr_t j = 0; j < num_arg_names; j++) {
|
|
name = ReadString();
|
|
array.SetAt(j, name);
|
|
}
|
|
obj = ArgumentsDescriptor::New(num_type_args, num_arguments, array);
|
|
}
|
|
} break;
|
|
case ConstantPoolTag::kICData: {
|
|
intptr_t flags = helper_->ReadByte();
|
|
InvocationKind kind =
|
|
static_cast<InvocationKind>(flags & kInvocationKindMask);
|
|
bool isDynamic = (flags & kFlagDynamic) != 0;
|
|
name ^= ReadObject();
|
|
ASSERT(name.IsSymbol());
|
|
intptr_t arg_desc_index = helper_->ReadUInt();
|
|
ASSERT(arg_desc_index < i);
|
|
array ^= pool.ObjectAt(arg_desc_index);
|
|
if (simpleInstanceOf == nullptr) {
|
|
simpleInstanceOf =
|
|
&Library::PrivateCoreLibName(Symbols::_simpleInstanceOf());
|
|
}
|
|
intptr_t checked_argument_count = 1;
|
|
if ((kind == InvocationKind::method) &&
|
|
((MethodTokenRecognizer::RecognizeTokenKind(name) !=
|
|
Token::kILLEGAL) ||
|
|
(name.raw() == simpleInstanceOf->raw()))) {
|
|
intptr_t argument_count = ArgumentsDescriptor(array).Count();
|
|
ASSERT(argument_count <= 2);
|
|
checked_argument_count = argument_count;
|
|
}
|
|
// Do not mangle == or call:
|
|
// * operator == takes an Object so its either not checked or checked
|
|
// at the entry because the parameter is marked covariant, neither
|
|
// of those cases require a dynamic invocation forwarder;
|
|
// * we assume that all closures are entered in a checked way.
|
|
if (isDynamic && (kind != InvocationKind::getter) &&
|
|
!FLAG_precompiled_mode && I->should_emit_strong_mode_checks() &&
|
|
(name.raw() != Symbols::EqualOperator().raw()) &&
|
|
(name.raw() != Symbols::Call().raw())) {
|
|
name = Function::CreateDynamicInvocationForwarderName(name);
|
|
}
|
|
obj =
|
|
ICData::New(function, name,
|
|
array, // Arguments descriptor.
|
|
H.thread()->compiler_state().GetNextDeoptId(),
|
|
checked_argument_count, ICData::RebindRule::kInstance);
|
|
} break;
|
|
case ConstantPoolTag::kStaticICData: {
|
|
elem = ReadObject();
|
|
ASSERT(elem.IsFunction());
|
|
name = Function::Cast(elem).name();
|
|
const int num_args_checked =
|
|
MethodRecognizer::NumArgsCheckedForStaticCall(Function::Cast(elem));
|
|
intptr_t arg_desc_index = helper_->ReadUInt();
|
|
ASSERT(arg_desc_index < i);
|
|
array ^= pool.ObjectAt(arg_desc_index);
|
|
obj = ICData::New(function, name,
|
|
array, // Arguments descriptor.
|
|
H.thread()->compiler_state().GetNextDeoptId(),
|
|
num_args_checked, ICData::RebindRule::kStatic);
|
|
ICData::Cast(obj).AddTarget(Function::Cast(elem));
|
|
} break;
|
|
case ConstantPoolTag::kStaticField:
|
|
obj = ReadObject();
|
|
ASSERT(obj.IsField());
|
|
break;
|
|
case ConstantPoolTag::kInstanceField:
|
|
field ^= ReadObject();
|
|
// InstanceField constant occupies 2 entries.
|
|
// The first entry is used for field offset.
|
|
obj = Smi::New(field.Offset() / kWordSize);
|
|
pool.SetTypeAt(i, ObjectPool::EntryType::kTaggedObject,
|
|
ObjectPool::Patchability::kNotPatchable);
|
|
pool.SetObjectAt(i, obj);
|
|
++i;
|
|
ASSERT(i < obj_count);
|
|
// The second entry is used for field object.
|
|
obj = field.raw();
|
|
break;
|
|
case ConstantPoolTag::kClass:
|
|
obj = ReadObject();
|
|
ASSERT(obj.IsClass());
|
|
break;
|
|
case ConstantPoolTag::kTypeArgumentsField:
|
|
cls ^= ReadObject();
|
|
obj = Smi::New(cls.type_arguments_field_offset() / kWordSize);
|
|
break;
|
|
case ConstantPoolTag::kTearOff:
|
|
obj = ReadObject();
|
|
ASSERT(obj.IsFunction());
|
|
obj = Function::Cast(obj).ImplicitClosureFunction();
|
|
ASSERT(obj.IsFunction());
|
|
obj = Function::Cast(obj).ImplicitStaticClosure();
|
|
ASSERT(obj.IsInstance());
|
|
obj = H.Canonicalize(Instance::Cast(obj));
|
|
break;
|
|
case ConstantPoolTag::kType:
|
|
obj = ReadObject();
|
|
ASSERT(obj.IsAbstractType());
|
|
break;
|
|
case ConstantPoolTag::kTypeArguments:
|
|
cls = Class::null();
|
|
obj = ReadTypeArguments(cls);
|
|
ASSERT(obj.IsNull() || obj.IsTypeArguments());
|
|
break;
|
|
case ConstantPoolTag::kList: {
|
|
obj = ReadObject();
|
|
ASSERT(obj.IsAbstractType());
|
|
const intptr_t length = helper_->ReadListLength();
|
|
array = Array::New(length, AbstractType::Cast(obj));
|
|
for (intptr_t j = 0; j < length; j++) {
|
|
intptr_t elem_index = helper_->ReadUInt();
|
|
ASSERT(elem_index < i);
|
|
elem = pool.ObjectAt(elem_index);
|
|
array.SetAt(j, elem);
|
|
}
|
|
array.MakeImmutable();
|
|
obj = H.Canonicalize(Array::Cast(array));
|
|
ASSERT(!obj.IsNull());
|
|
} break;
|
|
case ConstantPoolTag::kInstance: {
|
|
cls ^= ReadObject();
|
|
obj = Instance::New(cls, Heap::kOld);
|
|
intptr_t type_args_index = helper_->ReadUInt();
|
|
ASSERT(type_args_index < i);
|
|
type_args ^= pool.ObjectAt(type_args_index);
|
|
if (!type_args.IsNull()) {
|
|
Instance::Cast(obj).SetTypeArguments(type_args);
|
|
}
|
|
intptr_t num_fields = helper_->ReadUInt();
|
|
for (intptr_t j = 0; j < num_fields; j++) {
|
|
field ^= ReadObject();
|
|
intptr_t elem_index = helper_->ReadUInt();
|
|
ASSERT(elem_index < i);
|
|
elem = pool.ObjectAt(elem_index);
|
|
Instance::Cast(obj).SetField(field, elem);
|
|
}
|
|
obj = H.Canonicalize(Instance::Cast(obj));
|
|
} break;
|
|
case ConstantPoolTag::kTypeArgumentsForInstanceAllocation: {
|
|
cls ^= ReadObject();
|
|
obj = ReadTypeArguments(cls);
|
|
ASSERT(obj.IsNull() || obj.IsTypeArguments());
|
|
} break;
|
|
case ConstantPoolTag::kClosureFunction: {
|
|
intptr_t closure_index = helper_->ReadUInt();
|
|
obj = closures_->At(closure_index);
|
|
ASSERT(obj.IsFunction());
|
|
} break;
|
|
case ConstantPoolTag::kEndClosureFunctionScope: {
|
|
// Entry is not used and set to null.
|
|
obj = Object::null();
|
|
} break;
|
|
case ConstantPoolTag::kNativeEntry: {
|
|
name = ReadString();
|
|
obj = NativeEntry(function, name);
|
|
pool.SetTypeAt(i, ObjectPool::EntryType::kNativeEntryData,
|
|
ObjectPool::Patchability::kNotPatchable);
|
|
pool.SetObjectAt(i, obj);
|
|
continue;
|
|
}
|
|
case ConstantPoolTag::kSubtypeTestCache: {
|
|
obj = SubtypeTestCache::New();
|
|
} break;
|
|
case ConstantPoolTag::kPartialTearOffInstantiation: {
|
|
intptr_t tearoff_index = helper_->ReadUInt();
|
|
ASSERT(tearoff_index < i);
|
|
const Closure& old_closure =
|
|
Closure::CheckedHandle(Z, pool.ObjectAt(tearoff_index));
|
|
|
|
intptr_t type_args_index = helper_->ReadUInt();
|
|
ASSERT(type_args_index < i);
|
|
type_args ^= pool.ObjectAt(type_args_index);
|
|
|
|
obj = Closure::New(
|
|
TypeArguments::Handle(Z, old_closure.instantiator_type_arguments()),
|
|
TypeArguments::Handle(Z, old_closure.function_type_arguments()),
|
|
type_args, Function::Handle(Z, old_closure.function()),
|
|
Context::Handle(Z, old_closure.context()), Heap::kOld);
|
|
obj = H.Canonicalize(Instance::Cast(obj));
|
|
} break;
|
|
case ConstantPoolTag::kEmptyTypeArguments:
|
|
obj = Object::empty_type_arguments().raw();
|
|
break;
|
|
case ConstantPoolTag::kSymbol: {
|
|
name ^= ReadObject();
|
|
ASSERT(name.IsSymbol());
|
|
if (symbol_class == nullptr) {
|
|
elem = Library::InternalLibrary();
|
|
ASSERT(!elem.IsNull());
|
|
symbol_class = &Class::Handle(
|
|
Z, Library::Cast(elem).LookupClass(Symbols::Symbol()));
|
|
ASSERT(!symbol_class->IsNull());
|
|
symbol_name_field = &Field::Handle(
|
|
Z,
|
|
symbol_class->LookupInstanceFieldAllowPrivate(Symbols::_name()));
|
|
ASSERT(!symbol_name_field->IsNull());
|
|
}
|
|
obj = Instance::New(*symbol_class, Heap::kOld);
|
|
Instance::Cast(obj).SetField(*symbol_name_field, name);
|
|
obj = H.Canonicalize(Instance::Cast(obj));
|
|
} break;
|
|
case ConstantPoolTag::kInterfaceCallV1: {
|
|
UNREACHABLE();
|
|
} break;
|
|
case ConstantPoolTag::kObjectRef:
|
|
obj = ReadObject();
|
|
break;
|
|
case ConstantPoolTag::kDirectCall: {
|
|
// DirectCall constant occupies 2 entries.
|
|
// The first entry is used for target function.
|
|
obj = ReadObject();
|
|
ASSERT(obj.IsFunction());
|
|
pool.SetTypeAt(i, ObjectPool::EntryType::kTaggedObject,
|
|
ObjectPool::Patchability::kNotPatchable);
|
|
pool.SetObjectAt(i, obj);
|
|
++i;
|
|
ASSERT(i < obj_count);
|
|
// The second entry is used for arguments descriptor.
|
|
obj = ReadObject();
|
|
} break;
|
|
case ConstantPoolTag::kInterfaceCall: {
|
|
elem = ReadObject();
|
|
ASSERT(elem.IsFunction());
|
|
// InterfaceCall constant occupies 2 entries.
|
|
// The first entry is used for interface target.
|
|
pool.SetTypeAt(i, ObjectPool::EntryType::kTaggedObject,
|
|
ObjectPool::Patchability::kNotPatchable);
|
|
pool.SetObjectAt(i, elem);
|
|
++i;
|
|
ASSERT(i < obj_count);
|
|
// The second entry is used for arguments descriptor.
|
|
obj = ReadObject();
|
|
} break;
|
|
default:
|
|
UNREACHABLE();
|
|
}
|
|
pool.SetTypeAt(i, ObjectPool::EntryType::kTaggedObject,
|
|
ObjectPool::Patchability::kNotPatchable);
|
|
pool.SetObjectAt(i, obj);
|
|
}
|
|
}
|
|
|
|
RawBytecode* BytecodeReaderHelper::ReadBytecode(const ObjectPool& pool) {
|
|
#if defined(SUPPORT_TIMELINE)
|
|
TIMELINE_DURATION(Thread::Current(), CompilerVerbose,
|
|
"BytecodeReaderHelper::ReadBytecode");
|
|
#endif // defined(SUPPORT_TIMELINE)
|
|
intptr_t size = helper_->ReadUInt();
|
|
intptr_t offset = Utils::RoundUp(helper_->reader_.offset(), sizeof(KBCInstr));
|
|
const uint8_t* data = helper_->reader_.BufferAt(offset);
|
|
ASSERT(Utils::IsAligned(data, sizeof(KBCInstr)));
|
|
helper_->reader_.set_offset(offset + size);
|
|
|
|
// Create and return bytecode object.
|
|
return Bytecode::New(reinterpret_cast<uword>(data), size, offset, pool);
|
|
}
|
|
|
|
void BytecodeReaderHelper::ReadExceptionsTable(const Bytecode& bytecode,
|
|
bool has_exceptions_table) {
|
|
#if defined(SUPPORT_TIMELINE)
|
|
TIMELINE_DURATION(Thread::Current(), CompilerVerbose,
|
|
"BytecodeReaderHelper::ReadExceptionsTable");
|
|
#endif
|
|
|
|
const intptr_t try_block_count =
|
|
has_exceptions_table ? helper_->reader_.ReadListLength() : 0;
|
|
if (try_block_count > 0) {
|
|
const ObjectPool& pool = ObjectPool::Handle(Z, bytecode.object_pool());
|
|
AbstractType& handler_type = AbstractType::Handle(Z);
|
|
Array& handler_types = Array::ZoneHandle(Z);
|
|
DescriptorList* pc_descriptors_list = new (Z) DescriptorList(64);
|
|
ExceptionHandlerList* exception_handlers_list =
|
|
new (Z) ExceptionHandlerList();
|
|
|
|
// Encoding of ExceptionsTable is described in
|
|
// pkg/vm/lib/bytecode/exceptions.dart.
|
|
for (intptr_t try_index = 0; try_index < try_block_count; try_index++) {
|
|
intptr_t outer_try_index_plus1 = helper_->reader_.ReadUInt();
|
|
intptr_t outer_try_index = outer_try_index_plus1 - 1;
|
|
// PcDescriptors are expressed in terms of return addresses.
|
|
intptr_t start_pc = KernelBytecode::BytecodePcToOffset(
|
|
helper_->reader_.ReadUInt(), /* is_return_address = */ true);
|
|
intptr_t end_pc = KernelBytecode::BytecodePcToOffset(
|
|
helper_->reader_.ReadUInt(), /* is_return_address = */ true);
|
|
intptr_t handler_pc = KernelBytecode::BytecodePcToOffset(
|
|
helper_->reader_.ReadUInt(), /* is_return_address = */ false);
|
|
uint8_t flags = helper_->reader_.ReadByte();
|
|
const uint8_t kFlagNeedsStackTrace = 1 << 0;
|
|
const uint8_t kFlagIsSynthetic = 1 << 1;
|
|
const bool needs_stacktrace = (flags & kFlagNeedsStackTrace) != 0;
|
|
const bool is_generated = (flags & kFlagIsSynthetic) != 0;
|
|
intptr_t type_count = helper_->reader_.ReadListLength();
|
|
ASSERT(type_count > 0);
|
|
handler_types = Array::New(type_count, Heap::kOld);
|
|
for (intptr_t i = 0; i < type_count; i++) {
|
|
intptr_t type_index = helper_->reader_.ReadUInt();
|
|
ASSERT(type_index < pool.Length());
|
|
handler_type ^= pool.ObjectAt(type_index);
|
|
handler_types.SetAt(i, handler_type);
|
|
}
|
|
pc_descriptors_list->AddDescriptor(RawPcDescriptors::kOther, start_pc,
|
|
DeoptId::kNone,
|
|
TokenPosition::kNoSource, try_index);
|
|
pc_descriptors_list->AddDescriptor(RawPcDescriptors::kOther, end_pc,
|
|
DeoptId::kNone,
|
|
TokenPosition::kNoSource, -1);
|
|
|
|
exception_handlers_list->AddHandler(
|
|
try_index, outer_try_index, handler_pc, TokenPosition::kNoSource,
|
|
is_generated, handler_types, needs_stacktrace);
|
|
}
|
|
const PcDescriptors& descriptors = PcDescriptors::Handle(
|
|
Z, pc_descriptors_list->FinalizePcDescriptors(bytecode.PayloadStart()));
|
|
bytecode.set_pc_descriptors(descriptors);
|
|
const ExceptionHandlers& handlers = ExceptionHandlers::Handle(
|
|
Z, exception_handlers_list->FinalizeExceptionHandlers(
|
|
bytecode.PayloadStart()));
|
|
bytecode.set_exception_handlers(handlers);
|
|
} else {
|
|
bytecode.set_pc_descriptors(Object::empty_descriptors());
|
|
bytecode.set_exception_handlers(Object::empty_exception_handlers());
|
|
}
|
|
}
|
|
|
|
void BytecodeReaderHelper::ReadSourcePositions(const Bytecode& bytecode,
|
|
bool has_source_positions) {
|
|
if (!has_source_positions) {
|
|
return;
|
|
}
|
|
|
|
intptr_t offset = helper_->reader_.ReadUInt();
|
|
bytecode.set_source_positions_binary_offset(
|
|
bytecode_component_->GetSourcePositionsOffset() + offset);
|
|
}
|
|
|
|
RawTypedData* BytecodeReaderHelper::NativeEntry(const Function& function,
|
|
const String& external_name) {
|
|
MethodRecognizer::Kind kind = MethodRecognizer::RecognizeKind(function);
|
|
// This list of recognized methods must be kept in sync with the list of
|
|
// methods handled specially by the NativeCall bytecode in the interpreter.
|
|
switch (kind) {
|
|
case MethodRecognizer::kObjectEquals:
|
|
case MethodRecognizer::kStringBaseLength:
|
|
case MethodRecognizer::kStringBaseIsEmpty:
|
|
case MethodRecognizer::kGrowableArrayLength:
|
|
case MethodRecognizer::kObjectArrayLength:
|
|
case MethodRecognizer::kImmutableArrayLength:
|
|
case MethodRecognizer::kTypedListLength:
|
|
case MethodRecognizer::kTypedListViewLength:
|
|
case MethodRecognizer::kByteDataViewLength:
|
|
case MethodRecognizer::kClassIDgetID:
|
|
case MethodRecognizer::kGrowableArrayCapacity:
|
|
case MethodRecognizer::kListFactory:
|
|
case MethodRecognizer::kObjectArrayAllocate:
|
|
case MethodRecognizer::kLinkedHashMap_getIndex:
|
|
case MethodRecognizer::kLinkedHashMap_setIndex:
|
|
case MethodRecognizer::kLinkedHashMap_getData:
|
|
case MethodRecognizer::kLinkedHashMap_setData:
|
|
case MethodRecognizer::kLinkedHashMap_getHashMask:
|
|
case MethodRecognizer::kLinkedHashMap_setHashMask:
|
|
case MethodRecognizer::kLinkedHashMap_getUsedData:
|
|
case MethodRecognizer::kLinkedHashMap_setUsedData:
|
|
case MethodRecognizer::kLinkedHashMap_getDeletedKeys:
|
|
case MethodRecognizer::kLinkedHashMap_setDeletedKeys:
|
|
break;
|
|
default:
|
|
kind = MethodRecognizer::kUnknown;
|
|
}
|
|
NativeFunctionWrapper trampoline = NULL;
|
|
NativeFunction native_function = NULL;
|
|
intptr_t argc_tag = 0;
|
|
if (kind == MethodRecognizer::kUnknown) {
|
|
if (!FLAG_link_natives_lazily) {
|
|
const Class& cls = Class::Handle(Z, function.Owner());
|
|
const Library& library = Library::Handle(Z, cls.library());
|
|
Dart_NativeEntryResolver resolver = library.native_entry_resolver();
|
|
const bool is_bootstrap_native = Bootstrap::IsBootstrapResolver(resolver);
|
|
const int num_params =
|
|
NativeArguments::ParameterCountForResolution(function);
|
|
bool is_auto_scope = true;
|
|
native_function = NativeEntry::ResolveNative(library, external_name,
|
|
num_params, &is_auto_scope);
|
|
if (native_function == nullptr) {
|
|
Report::MessageF(Report::kError, Script::Handle(function.script()),
|
|
function.token_pos(), Report::AtLocation,
|
|
"native function '%s' (%" Pd
|
|
" arguments) cannot be found",
|
|
external_name.ToCString(), function.NumParameters());
|
|
}
|
|
if (is_bootstrap_native) {
|
|
trampoline = &NativeEntry::BootstrapNativeCallWrapper;
|
|
} else if (is_auto_scope) {
|
|
trampoline = &NativeEntry::AutoScopeNativeCallWrapper;
|
|
} else {
|
|
trampoline = &NativeEntry::NoScopeNativeCallWrapper;
|
|
}
|
|
}
|
|
argc_tag = NativeArguments::ComputeArgcTag(function);
|
|
}
|
|
return NativeEntryData::New(kind, trampoline, native_function, argc_tag);
|
|
}
|
|
|
|
RawArray* BytecodeReaderHelper::ReadBytecodeComponent(intptr_t md_offset) {
|
|
ASSERT(Thread::Current()->IsMutatorThread());
|
|
|
|
AlternativeReadingScope alt(&helper_->reader_, &H.metadata_payloads(),
|
|
md_offset);
|
|
|
|
const intptr_t start_offset = helper_->reader_.offset();
|
|
|
|
intptr_t magic = helper_->reader_.ReadUInt32();
|
|
if (magic != KernelBytecode::kMagicValue) {
|
|
return ReadBytecodeComponentV2(md_offset);
|
|
}
|
|
|
|
const intptr_t version = helper_->reader_.ReadUInt32();
|
|
if ((version < KernelBytecode::kMinSupportedBytecodeFormatVersion) ||
|
|
(version > KernelBytecode::kMaxSupportedBytecodeFormatVersion)) {
|
|
FATAL3("Unsupported Dart bytecode format version %" Pd
|
|
". "
|
|
"This version of Dart VM supports bytecode format versions from %" Pd
|
|
" to %" Pd ".",
|
|
version, KernelBytecode::kMinSupportedBytecodeFormatVersion,
|
|
KernelBytecode::kMaxSupportedBytecodeFormatVersion);
|
|
}
|
|
|
|
helper_->reader_.ReadUInt32(); // Skip stringTable.numItems
|
|
const intptr_t string_table_offset =
|
|
start_offset + helper_->reader_.ReadUInt32();
|
|
|
|
helper_->reader_.ReadUInt32(); // Skip objectTable.numItems
|
|
const intptr_t object_table_offset =
|
|
start_offset + helper_->reader_.ReadUInt32();
|
|
|
|
helper_->reader_.ReadUInt32(); // Skip main.numItems
|
|
const intptr_t main_offset = start_offset + helper_->reader_.ReadUInt32();
|
|
|
|
helper_->reader_.ReadUInt32(); // Skip members.numItems
|
|
const intptr_t members_offset = start_offset + helper_->reader_.ReadUInt32();
|
|
|
|
helper_->reader_.ReadUInt32(); // Skip codes.numItems
|
|
const intptr_t codes_offset = start_offset + helper_->reader_.ReadUInt32();
|
|
|
|
helper_->reader_.ReadUInt32(); // Skip sourcePositions.numItems
|
|
const intptr_t sources_positions_offset =
|
|
start_offset + helper_->reader_.ReadUInt32();
|
|
|
|
helper_->reader_.ReadUInt32(); // Skip annotations.numItems
|
|
const intptr_t annotations_offset =
|
|
start_offset + helper_->reader_.ReadUInt32();
|
|
|
|
// Read header of string table.
|
|
helper_->reader_.set_offset(string_table_offset);
|
|
const intptr_t num_one_byte_strings = helper_->reader_.ReadUInt32();
|
|
const intptr_t num_two_byte_strings = helper_->reader_.ReadUInt32();
|
|
const intptr_t strings_contents_offset =
|
|
helper_->reader_.offset() +
|
|
(num_one_byte_strings + num_two_byte_strings) * 4;
|
|
|
|
// Read header of object table.
|
|
helper_->reader_.set_offset(object_table_offset);
|
|
const intptr_t num_objects = helper_->reader_.ReadUInt();
|
|
const intptr_t objects_size = helper_->reader_.ReadUInt();
|
|
|
|
// Skip over contents of objects.
|
|
const intptr_t objects_contents_offset = helper_->reader_.offset();
|
|
helper_->reader_.set_offset(objects_contents_offset + objects_size);
|
|
|
|
const Array& bytecode_component_array = Array::Handle(
|
|
Z,
|
|
BytecodeComponentData::New(
|
|
Z, version, num_objects, string_table_offset, strings_contents_offset,
|
|
objects_contents_offset, main_offset, members_offset, codes_offset,
|
|
sources_positions_offset, annotations_offset, Heap::kOld));
|
|
|
|
BytecodeComponentData bytecode_component(bytecode_component_array);
|
|
|
|
// Read object offsets.
|
|
Smi& offs = Smi::Handle(Z);
|
|
for (intptr_t i = 0; i < num_objects; ++i) {
|
|
offs = Smi::New(helper_->reader_.ReadUInt());
|
|
bytecode_component.SetObject(i, offs);
|
|
}
|
|
|
|
H.SetBytecodeComponent(bytecode_component_array);
|
|
|
|
return bytecode_component_array.raw();
|
|
}
|
|
|
|
// TODO(alexmarkov): obsolete, remove when dropping support for old bytecode
|
|
// format version.
|
|
RawArray* BytecodeReaderHelper::ReadBytecodeComponentV2(intptr_t md_offset) {
|
|
AlternativeReadingScope alt(&helper_->reader_, &H.metadata_payloads(),
|
|
md_offset);
|
|
|
|
const intptr_t kMinVersion = 1;
|
|
const intptr_t kMaxVersion = 2;
|
|
|
|
const intptr_t version = helper_->reader_.ReadUInt();
|
|
if ((version < kMinVersion) || (version > kMaxVersion)) {
|
|
FATAL1("Unsupported Dart bytecode format version %" Pd ".", version);
|
|
}
|
|
|
|
const intptr_t strings_size = helper_->reader_.ReadUInt();
|
|
helper_->reader_.ReadUInt(); // Objects table size.
|
|
|
|
// Read header of strings table.
|
|
const intptr_t strings_header_offset = helper_->reader_.offset();
|
|
const intptr_t num_one_byte_strings = helper_->reader_.ReadUInt32();
|
|
const intptr_t num_two_byte_strings = helper_->reader_.ReadUInt32();
|
|
const intptr_t strings_contents_offset =
|
|
helper_->reader_.offset() +
|
|
(num_one_byte_strings + num_two_byte_strings) * 4;
|
|
|
|
// Read header of objects table.
|
|
helper_->reader_.set_offset(strings_header_offset + strings_size);
|
|
const intptr_t num_objects = helper_->reader_.ReadUInt();
|
|
const intptr_t objects_size = helper_->reader_.ReadUInt();
|
|
|
|
// Skip over contents of objects.
|
|
const intptr_t objects_contents_offset = helper_->reader_.offset();
|
|
helper_->reader_.set_offset(objects_contents_offset + objects_size);
|
|
|
|
const Array& bytecode_component_array =
|
|
Array::Handle(Z, BytecodeComponentData::New(
|
|
Z, version, num_objects, strings_header_offset,
|
|
strings_contents_offset, objects_contents_offset, 0,
|
|
0, 0, 0, 0, Heap::kOld));
|
|
BytecodeComponentData bytecode_component(bytecode_component_array);
|
|
|
|
// Read object offsets.
|
|
Smi& offs = Smi::Handle(Z);
|
|
for (intptr_t i = 0; i < num_objects; ++i) {
|
|
offs = Smi::New(helper_->reader_.ReadUInt());
|
|
bytecode_component.SetObject(i, offs);
|
|
}
|
|
|
|
H.SetBytecodeComponent(bytecode_component_array);
|
|
|
|
return bytecode_component_array.raw();
|
|
}
|
|
|
|
RawObject* BytecodeReaderHelper::ReadObject() {
|
|
uint32_t header = helper_->reader_.ReadUInt();
|
|
if ((header & kReferenceBit) != 0) {
|
|
intptr_t index = header >> kIndexShift;
|
|
if (index == 0) {
|
|
return Object::null();
|
|
}
|
|
RawObject* obj = bytecode_component_->GetObject(index);
|
|
if (obj->IsHeapObject()) {
|
|
return obj;
|
|
}
|
|
// Object is not loaded yet.
|
|
intptr_t offset = bytecode_component_->GetObjectsContentsOffset() +
|
|
Smi::Value(Smi::RawCast(obj));
|
|
AlternativeReadingScope alt(&helper_->reader_, &H.metadata_payloads(),
|
|
offset);
|
|
header = helper_->reader_.ReadUInt();
|
|
|
|
obj = ReadObjectContents(header);
|
|
ASSERT(obj->IsHeapObject());
|
|
{
|
|
Thread* thread = H.thread();
|
|
REUSABLE_OBJECT_HANDLESCOPE(thread);
|
|
Object& obj_handle = thread->ObjectHandle();
|
|
obj_handle = obj;
|
|
bytecode_component_->SetObject(index, obj_handle);
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
return ReadObjectContents(header);
|
|
}
|
|
|
|
RawString* BytecodeReaderHelper::ConstructorName(const Class& cls,
|
|
const String& name) {
|
|
GrowableHandlePtrArray<const String> pieces(Z, 3);
|
|
pieces.Add(String::Handle(Z, cls.Name()));
|
|
pieces.Add(Symbols::Dot());
|
|
pieces.Add(name);
|
|
return Symbols::FromConcatAll(H.thread(), pieces);
|
|
}
|
|
|
|
RawObject* BytecodeReaderHelper::ReadObjectContents(uint32_t header) {
|
|
ASSERT(((header & kReferenceBit) == 0));
|
|
|
|
// Must be in sync with enum ObjectKind in
|
|
// pkg/vm/lib/bytecode/object_table.dart.
|
|
enum ObjectKind {
|
|
kInvalid,
|
|
kLibrary,
|
|
kClass,
|
|
kMember,
|
|
kClosure,
|
|
kSimpleType,
|
|
kTypeParameter,
|
|
kGenericType,
|
|
kFunctionType,
|
|
kName,
|
|
kTypeArguments,
|
|
kFinalizedGenericType,
|
|
kConstObject,
|
|
kArgDesc,
|
|
};
|
|
|
|
// Member flags, must be in sync with _MemberHandle constants in
|
|
// pkg/vm/lib/bytecode/object_table.dart.
|
|
const intptr_t kFlagIsField = kFlagBit0;
|
|
const intptr_t kFlagIsConstructor = kFlagBit1;
|
|
|
|
// SimpleType flags, must be in sync with _SimpleTypeHandle constants in
|
|
// pkg/vm/lib/bytecode/object_table.dart.
|
|
const intptr_t kFlagIsDynamic = kFlagBit0;
|
|
const intptr_t kFlagIsVoid = kFlagBit1;
|
|
|
|
// FunctionType flags, must be in sync with _FunctionTypeHandle constants in
|
|
// pkg/vm/lib/bytecode/object_table.dart.
|
|
const int kFlagHasOptionalPositionalParams = kFlagBit0;
|
|
const int kFlagHasOptionalNamedParams = kFlagBit1;
|
|
const int kFlagHasTypeParams = kFlagBit2;
|
|
|
|
// ArgDesc flags, must be in sync with _ArgDescHandle constants in
|
|
// pkg/vm/lib/bytecode/object_table.dart.
|
|
const int kFlagHasNamedArgs = kFlagBit0;
|
|
const int kFlagHasTypeArgs = kFlagBit1;
|
|
|
|
const intptr_t kind = (header >> kKindShift) & kKindMask;
|
|
const intptr_t flags = header & kFlagsMask;
|
|
|
|
switch (kind) {
|
|
case kInvalid:
|
|
UNREACHABLE();
|
|
break;
|
|
case kLibrary: {
|
|
const String& uri = String::Handle(Z, ReadString());
|
|
RawLibrary* library = Library::LookupLibrary(H.thread(), uri);
|
|
if (library == Library::null()) {
|
|
FATAL1("Unable to find library %s", uri.ToCString());
|
|
}
|
|
return library;
|
|
}
|
|
case kClass: {
|
|
const Library& library = Library::CheckedHandle(Z, ReadObject());
|
|
const String& class_name = String::CheckedHandle(Z, ReadObject());
|
|
if (class_name.raw() == Symbols::Empty().raw()) {
|
|
return library.toplevel_class();
|
|
}
|
|
RawClass* cls = library.LookupClassAllowPrivate(class_name);
|
|
if (cls == Class::null()) {
|
|
FATAL2("Unable to find class %s in %s", class_name.ToCString(),
|
|
library.ToCString());
|
|
}
|
|
return cls;
|
|
}
|
|
case kMember: {
|
|
const Class& cls = Class::CheckedHandle(Z, ReadObject());
|
|
String& name = String::CheckedHandle(Z, ReadObject());
|
|
if ((flags & kFlagIsField) != 0) {
|
|
RawField* field = cls.LookupFieldAllowPrivate(name);
|
|
if (field == Field::null()) {
|
|
FATAL2("Unable to find field %s in %s", name.ToCString(),
|
|
cls.ToCString());
|
|
}
|
|
return field;
|
|
} else {
|
|
if ((flags & kFlagIsConstructor) != 0) {
|
|
name = ConstructorName(cls, name);
|
|
}
|
|
ASSERT(!name.IsNull() && name.IsSymbol());
|
|
if (name.raw() == scoped_function_name_.raw() &&
|
|
cls.raw() == scoped_function_class_.raw()) {
|
|
return scoped_function_.raw();
|
|
}
|
|
RawFunction* function = cls.LookupFunctionAllowPrivate(name);
|
|
if (function == Function::null()) {
|
|
// When requesting a getter, also return method extractors.
|
|
if (Field::IsGetterName(name)) {
|
|
String& method_name =
|
|
String::Handle(Z, Field::NameFromGetter(name));
|
|
function = cls.LookupFunctionAllowPrivate(method_name);
|
|
if (function != Function::null()) {
|
|
function = Function::Handle(Z, function).GetMethodExtractor(name);
|
|
if (function != Function::null()) {
|
|
return function;
|
|
}
|
|
}
|
|
}
|
|
FATAL2("Unable to find function %s in %s", name.ToCString(),
|
|
cls.ToCString());
|
|
}
|
|
return function;
|
|
}
|
|
}
|
|
case kClosure: {
|
|
ReadObject(); // Skip enclosing member.
|
|
const intptr_t closure_index = helper_->reader_.ReadUInt();
|
|
return closures_->At(closure_index);
|
|
}
|
|
case kSimpleType: {
|
|
const Class& cls = Class::CheckedHandle(Z, ReadObject());
|
|
if ((flags & kFlagIsDynamic) != 0) {
|
|
ASSERT(cls.IsNull());
|
|
return AbstractType::dynamic_type().raw();
|
|
}
|
|
if ((flags & kFlagIsVoid) != 0) {
|
|
ASSERT(cls.IsNull());
|
|
return AbstractType::void_type().raw();
|
|
}
|
|
return cls.DeclarationType();
|
|
}
|
|
case kTypeParameter: {
|
|
Object& parent = Object::Handle(Z, ReadObject());
|
|
const intptr_t index_in_parent = helper_->reader_.ReadUInt();
|
|
TypeArguments& type_parameters = TypeArguments::Handle(Z);
|
|
if (parent.IsClass()) {
|
|
type_parameters = Class::Cast(parent).type_parameters();
|
|
} else if (parent.IsFunction()) {
|
|
if (Function::Cast(parent).IsFactory()) {
|
|
// For factory constructors VM uses type parameters of a class
|
|
// instead of constructor's type parameters.
|
|
parent = Function::Cast(parent).Owner();
|
|
type_parameters = Class::Cast(parent).type_parameters();
|
|
} else {
|
|
type_parameters = Function::Cast(parent).type_parameters();
|
|
}
|
|
} else if (parent.IsNull()) {
|
|
ASSERT(function_type_type_parameters_ != nullptr);
|
|
type_parameters = function_type_type_parameters_->raw();
|
|
} else {
|
|
UNREACHABLE();
|
|
}
|
|
AbstractType& type =
|
|
AbstractType::Handle(Z, type_parameters.TypeAt(index_in_parent));
|
|
// TODO(alexmarkov): figure out how to skip this type finalization
|
|
// (consider finalizing type parameters of classes/functions eagerly).
|
|
return ClassFinalizer::FinalizeType(*active_class_->klass, type);
|
|
}
|
|
case kGenericType: {
|
|
const Class& cls = Class::CheckedHandle(Z, ReadObject());
|
|
const TypeArguments& type_arguments =
|
|
TypeArguments::Handle(Z, ReadTypeArguments(Class::Handle(Z)));
|
|
const Type& type = Type::Handle(
|
|
Z, Type::New(cls, type_arguments, TokenPosition::kNoSource));
|
|
return ClassFinalizer::FinalizeType(*active_class_->klass, type);
|
|
}
|
|
case kFunctionType: {
|
|
Function& signature_function = Function::ZoneHandle(
|
|
Z, Function::NewSignatureFunction(*active_class_->klass,
|
|
active_class_->enclosing != NULL
|
|
? *active_class_->enclosing
|
|
: Function::null_function(),
|
|
TokenPosition::kNoSource));
|
|
|
|
return ReadFunctionSignature(
|
|
signature_function, (flags & kFlagHasOptionalPositionalParams) != 0,
|
|
(flags & kFlagHasOptionalNamedParams) != 0,
|
|
(flags & kFlagHasTypeParams) != 0,
|
|
/* has_positional_param_names = */ false);
|
|
}
|
|
case kName: {
|
|
const Library& library = Library::CheckedHandle(Z, ReadObject());
|
|
if (library.IsNull()) {
|
|
return ReadString();
|
|
} else {
|
|
const String& name =
|
|
String::Handle(Z, ReadString(/* is_canonical = */ false));
|
|
return library.PrivateName(name);
|
|
}
|
|
}
|
|
case kTypeArguments: {
|
|
return ReadTypeArguments(Class::Handle(Z));
|
|
}
|
|
case kFinalizedGenericType: {
|
|
const Class& cls = Class::CheckedHandle(Z, ReadObject());
|
|
const TypeArguments& type_arguments =
|
|
TypeArguments::CheckedHandle(Z, ReadObject());
|
|
const Type& type = Type::Handle(
|
|
Z, Type::New(cls, type_arguments, TokenPosition::kNoSource));
|
|
type.SetIsFinalized();
|
|
return type.Canonicalize();
|
|
}
|
|
case kConstObject: {
|
|
const intptr_t tag = flags / kFlagBit0;
|
|
return ReadConstObject(tag);
|
|
}
|
|
case kArgDesc: {
|
|
const intptr_t num_arguments = helper_->ReadUInt();
|
|
const intptr_t num_type_args =
|
|
((flags & kFlagHasTypeArgs) != 0) ? helper_->ReadUInt() : 0;
|
|
if ((flags & kFlagHasNamedArgs) == 0) {
|
|
return ArgumentsDescriptor::New(num_type_args, num_arguments);
|
|
} else {
|
|
const intptr_t num_arg_names = helper_->ReadListLength();
|
|
const Array& array = Array::Handle(Z, Array::New(num_arg_names));
|
|
String& name = String::Handle(Z);
|
|
for (intptr_t i = 0; i < num_arg_names; ++i) {
|
|
name ^= ReadObject();
|
|
array.SetAt(i, name);
|
|
}
|
|
return ArgumentsDescriptor::New(num_type_args, num_arguments, array);
|
|
}
|
|
}
|
|
default:
|
|
UNREACHABLE();
|
|
}
|
|
|
|
return Object::null();
|
|
}
|
|
|
|
RawObject* BytecodeReaderHelper::ReadConstObject(intptr_t tag) {
|
|
// Must be in sync with enum ConstTag in
|
|
// pkg/vm/lib/bytecode/object_table.dart.
|
|
enum ConstTag {
|
|
kInvalid,
|
|
kInstance,
|
|
kInt,
|
|
kDouble,
|
|
kList,
|
|
kTearOff,
|
|
kBool,
|
|
kSymbol,
|
|
kTearOffInstantiation,
|
|
};
|
|
|
|
switch (tag) {
|
|
case kInvalid:
|
|
UNREACHABLE();
|
|
break;
|
|
case kInstance: {
|
|
const Type& type = Type::CheckedHandle(Z, ReadObject());
|
|
const Class& cls = Class::Handle(Z, type.type_class());
|
|
const Instance& obj = Instance::Handle(Z, Instance::New(cls, Heap::kOld));
|
|
if (type.arguments() != TypeArguments::null()) {
|
|
const TypeArguments& type_args =
|
|
TypeArguments::Handle(Z, type.arguments());
|
|
obj.SetTypeArguments(type_args);
|
|
}
|
|
const intptr_t num_fields = helper_->ReadUInt();
|
|
Field& field = Field::Handle(Z);
|
|
Object& value = Object::Handle(Z);
|
|
for (intptr_t i = 0; i < num_fields; ++i) {
|
|
field ^= ReadObject();
|
|
value = ReadObject();
|
|
obj.SetField(field, value);
|
|
}
|
|
return H.Canonicalize(obj);
|
|
}
|
|
case kInt: {
|
|
const int64_t value = helper_->reader_.ReadSLEB128AsInt64();
|
|
if (Smi::IsValid(value)) {
|
|
return Smi::New(static_cast<intptr_t>(value));
|
|
}
|
|
const Integer& obj = Integer::Handle(Z, Integer::New(value, Heap::kOld));
|
|
return H.Canonicalize(obj);
|
|
}
|
|
case kDouble: {
|
|
const int64_t bits = helper_->reader_.ReadSLEB128AsInt64();
|
|
double value = bit_cast<double, int64_t>(bits);
|
|
const Double& obj = Double::Handle(Z, Double::New(value, Heap::kOld));
|
|
return H.Canonicalize(obj);
|
|
}
|
|
case kList: {
|
|
const AbstractType& elem_type =
|
|
AbstractType::CheckedHandle(Z, ReadObject());
|
|
const intptr_t length = helper_->ReadUInt();
|
|
const Array& array = Array::Handle(Z, Array::New(length, elem_type));
|
|
Object& value = Object::Handle(Z);
|
|
for (intptr_t i = 0; i < length; ++i) {
|
|
value = ReadObject();
|
|
array.SetAt(i, value);
|
|
}
|
|
array.MakeImmutable();
|
|
return H.Canonicalize(array);
|
|
}
|
|
case kTearOff: {
|
|
Object& obj = Object::Handle(Z, ReadObject());
|
|
ASSERT(obj.IsFunction());
|
|
obj = Function::Cast(obj).ImplicitClosureFunction();
|
|
ASSERT(obj.IsFunction());
|
|
obj = Function::Cast(obj).ImplicitStaticClosure();
|
|
ASSERT(obj.IsInstance());
|
|
return H.Canonicalize(Instance::Cast(obj));
|
|
}
|
|
case kBool: {
|
|
bool is_true = helper_->ReadByte() != 0;
|
|
return is_true ? Bool::True().raw() : Bool::False().raw();
|
|
}
|
|
case kSymbol: {
|
|
const String& name = String::CheckedHandle(Z, ReadObject());
|
|
ASSERT(name.IsSymbol());
|
|
const Library& library = Library::Handle(Z, Library::InternalLibrary());
|
|
ASSERT(!library.IsNull());
|
|
const Class& cls =
|
|
Class::Handle(Z, library.LookupClass(Symbols::Symbol()));
|
|
ASSERT(!cls.IsNull());
|
|
const Field& field = Field::Handle(
|
|
Z, cls.LookupInstanceFieldAllowPrivate(Symbols::_name()));
|
|
ASSERT(!field.IsNull());
|
|
const Instance& obj = Instance::Handle(Z, Instance::New(cls, Heap::kOld));
|
|
obj.SetField(field, name);
|
|
return H.Canonicalize(obj);
|
|
}
|
|
case kTearOffInstantiation: {
|
|
Closure& closure = Closure::CheckedHandle(Z, ReadObject());
|
|
const TypeArguments& type_args =
|
|
TypeArguments::CheckedHandle(Z, ReadObject());
|
|
closure = Closure::New(
|
|
TypeArguments::Handle(Z, closure.instantiator_type_arguments()),
|
|
TypeArguments::Handle(Z, closure.function_type_arguments()),
|
|
type_args, Function::Handle(Z, closure.function()),
|
|
Context::Handle(Z, closure.context()), Heap::kOld);
|
|
return H.Canonicalize(closure);
|
|
}
|
|
default:
|
|
UNREACHABLE();
|
|
}
|
|
return Object::null();
|
|
}
|
|
|
|
RawString* BytecodeReaderHelper::ReadString(bool is_canonical) {
|
|
const int kFlagTwoByteString = 1;
|
|
const int kHeaderFields = 2;
|
|
const int kUInt32Size = 4;
|
|
|
|
uint32_t ref = helper_->reader_.ReadUInt();
|
|
const bool isOneByteString = (ref & kFlagTwoByteString) == 0;
|
|
intptr_t index = ref >> 1;
|
|
|
|
if (!isOneByteString) {
|
|
const uint32_t num_one_byte_strings = helper_->reader_.ReadUInt32At(
|
|
bytecode_component_->GetStringsHeaderOffset());
|
|
index += num_one_byte_strings;
|
|
}
|
|
|
|
AlternativeReadingScope alt(&helper_->reader_, &H.metadata_payloads(),
|
|
bytecode_component_->GetStringsHeaderOffset() +
|
|
(kHeaderFields + index - 1) * kUInt32Size);
|
|
intptr_t start_offs = helper_->ReadUInt32();
|
|
intptr_t end_offs = helper_->ReadUInt32();
|
|
if (index == 0) {
|
|
// For the 0-th string we read a header field instead of end offset of
|
|
// the previous string.
|
|
start_offs = 0;
|
|
}
|
|
|
|
// Bytecode strings reside in ExternalTypedData which is not movable by GC,
|
|
// so it is OK to take a direct pointer to string characters even if
|
|
// symbol allocation triggers GC.
|
|
const uint8_t* data = helper_->reader_.BufferAt(
|
|
bytecode_component_->GetStringsContentsOffset() + start_offs);
|
|
|
|
if (is_canonical) {
|
|
if (isOneByteString) {
|
|
return Symbols::FromLatin1(H.thread(), data, end_offs - start_offs);
|
|
} else {
|
|
return Symbols::FromUTF16(H.thread(),
|
|
reinterpret_cast<const uint16_t*>(data),
|
|
(end_offs - start_offs) >> 1);
|
|
}
|
|
} else {
|
|
if (isOneByteString) {
|
|
return String::FromLatin1(data, end_offs - start_offs, Heap::kOld);
|
|
} else {
|
|
return String::FromUTF16(reinterpret_cast<const uint16_t*>(data),
|
|
(end_offs - start_offs) >> 1, Heap::kOld);
|
|
}
|
|
}
|
|
}
|
|
|
|
RawTypeArguments* BytecodeReaderHelper::ReadTypeArguments(
|
|
const Class& instantiator) {
|
|
const intptr_t length = helper_->reader_.ReadUInt();
|
|
TypeArguments& type_arguments =
|
|
TypeArguments::ZoneHandle(Z, TypeArguments::New(length));
|
|
AbstractType& type = AbstractType::Handle(Z);
|
|
for (intptr_t i = 0; i < length; ++i) {
|
|
type ^= ReadObject();
|
|
type_arguments.SetTypeAt(i, type);
|
|
}
|
|
|
|
type_arguments = type_arguments.Canonicalize();
|
|
|
|
if (instantiator.IsNull()) {
|
|
return type_arguments.raw();
|
|
}
|
|
|
|
if (type_arguments.IsNull() && instantiator.NumTypeArguments() == length) {
|
|
return type_arguments.raw();
|
|
}
|
|
|
|
// We make a temporary [Type] object and use `ClassFinalizer::FinalizeType` to
|
|
// finalize the argument types.
|
|
// (This can for example make the [type_arguments] vector larger)
|
|
type = Type::New(instantiator, type_arguments, TokenPosition::kNoSource);
|
|
type ^= ClassFinalizer::FinalizeType(*active_class_->klass, type);
|
|
return type.arguments();
|
|
}
|
|
|
|
void BytecodeReaderHelper::ReadMembers(const Class& cls,
|
|
intptr_t members_offset,
|
|
bool discard_fields) {
|
|
ASSERT(Thread::Current()->IsMutatorThread());
|
|
ASSERT(cls.is_type_finalized());
|
|
ASSERT(!cls.is_loaded());
|
|
|
|
const intptr_t offset =
|
|
bytecode_component_->GetMembersOffset() + members_offset;
|
|
AlternativeReadingScope alt_md(&helper_->reader_, &H.metadata_payloads(),
|
|
offset);
|
|
|
|
const intptr_t num_functions = helper_->reader_.ReadUInt();
|
|
functions_ = &Array::Handle(Z, Array::New(num_functions, Heap::kOld));
|
|
function_index_ = 0;
|
|
|
|
ReadFieldDeclarations(cls, discard_fields);
|
|
ReadFunctionDeclarations(cls);
|
|
|
|
cls.set_is_loaded(true);
|
|
}
|
|
|
|
void BytecodeReaderHelper::ReadFieldDeclarations(const Class& cls,
|
|
bool discard_fields) {
|
|
// Field flags, must be in sync with FieldDeclaration constants in
|
|
// pkg/vm/lib/bytecode/declarations.dart.
|
|
const int kHasInitializerFlag = 1 << 0;
|
|
const int kHasGetterFlag = 1 << 1;
|
|
const int kHasSetterFlag = 1 << 2;
|
|
const int kIsReflectableFlag = 1 << 3;
|
|
const int kIsStaticFlag = 1 << 4;
|
|
const int kIsConstFlag = 1 << 5;
|
|
const int kIsFinalFlag = 1 << 6;
|
|
const int kIsCovariantFlag = 1 << 7;
|
|
const int kIsGenericCovariantImplFlag = 1 << 8;
|
|
const int kHasSourcePositionsFlag = 1 << 9;
|
|
const int kHasAnnotationsFlag = 1 << 10;
|
|
const int kHasPragmaFlag = 1 << 11;
|
|
const int kHasCustomScriptFlag = 1 << 12;
|
|
|
|
const int num_fields = helper_->ReadListLength();
|
|
if ((num_fields == 0) && !cls.is_enum_class()) {
|
|
return;
|
|
}
|
|
const Array& fields = Array::Handle(
|
|
Z, Array::New(num_fields + (cls.is_enum_class() ? 1 : 0), Heap::kOld));
|
|
String& name = String::Handle(Z);
|
|
Object& script_class = Object::Handle(Z);
|
|
AbstractType& type = AbstractType::Handle(Z);
|
|
Field& field = Field::Handle(Z);
|
|
Instance& value = Instance::Handle(Z);
|
|
Function& function = Function::Handle(Z);
|
|
|
|
for (intptr_t i = 0; i < num_fields; ++i) {
|
|
intptr_t flags = helper_->reader_.ReadUInt();
|
|
|
|
const bool is_static = (flags & kIsStaticFlag) != 0;
|
|
const bool is_final = (flags & kIsFinalFlag) != 0;
|
|
const bool is_const = (flags & kIsConstFlag) != 0;
|
|
const bool has_initializer = (flags & kHasInitializerFlag) != 0;
|
|
const bool has_pragma = (flags & kHasPragmaFlag) != 0;
|
|
|
|
name ^= ReadObject();
|
|
type ^= ReadObject();
|
|
|
|
if ((flags & kHasCustomScriptFlag) != 0) {
|
|
Script& script = Script::CheckedHandle(Z, ReadObject());
|
|
script_class = GetPatchClass(cls, script);
|
|
} else {
|
|
script_class = cls.raw();
|
|
}
|
|
|
|
TokenPosition position = TokenPosition::kNoSource;
|
|
TokenPosition end_position = TokenPosition::kNoSource;
|
|
if ((flags & kHasSourcePositionsFlag) != 0) {
|
|
position = helper_->ReadPosition();
|
|
end_position = helper_->ReadPosition();
|
|
}
|
|
|
|
field = Field::New(name, is_static, is_final, is_const,
|
|
(flags & kIsReflectableFlag) != 0, script_class, type,
|
|
position, end_position);
|
|
|
|
field.set_is_declared_in_bytecode(true);
|
|
field.set_has_pragma(has_pragma);
|
|
field.set_is_covariant((flags & kIsCovariantFlag) != 0);
|
|
field.set_is_generic_covariant_impl((flags & kIsGenericCovariantImplFlag) !=
|
|
0);
|
|
field.set_has_initializer(has_initializer);
|
|
|
|
if (!has_initializer) {
|
|
value ^= ReadObject();
|
|
if (is_static) {
|
|
field.SetStaticValue(value, true);
|
|
} else {
|
|
// Note: optimizer relies on DoubleInitialized bit in its field-unboxing
|
|
// heuristics. See JitCallSpecializer::VisitStoreInstanceField for more
|
|
// details.
|
|
field.RecordStore(value);
|
|
if (value.IsDouble()) {
|
|
field.set_is_double_initialized(true);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (has_initializer && is_static) {
|
|
const intptr_t code_offset = helper_->reader_.ReadUInt();
|
|
field.set_bytecode_offset(code_offset +
|
|
bytecode_component_->GetCodesOffset());
|
|
field.SetStaticValue(Object::sentinel(), true);
|
|
}
|
|
|
|
if ((flags & kHasGetterFlag) != 0) {
|
|
name ^= ReadObject();
|
|
function =
|
|
Function::New(name,
|
|
is_static ? RawFunction::kImplicitStaticFinalGetter
|
|
: RawFunction::kImplicitGetter,
|
|
is_static, is_const,
|
|
false, // is_abstract
|
|
false, // is_external
|
|
false, // is_native
|
|
script_class, position);
|
|
function.set_end_token_pos(end_position);
|
|
function.set_result_type(type);
|
|
function.set_is_debuggable(false);
|
|
function.set_accessor_field(field);
|
|
function.set_is_declared_in_bytecode(true);
|
|
if (is_const && has_initializer) {
|
|
function.set_bytecode_offset(field.bytecode_offset());
|
|
}
|
|
H.SetupFieldAccessorFunction(cls, function, type);
|
|
functions_->SetAt(function_index_++, function);
|
|
}
|
|
|
|
if ((flags & kHasSetterFlag) != 0) {
|
|
ASSERT((!is_static) && (!is_final) && (!is_const));
|
|
name ^= ReadObject();
|
|
function = Function::New(name, RawFunction::kImplicitSetter,
|
|
false, // is_static
|
|
false, // is_const
|
|
false, // is_abstract
|
|
false, // is_external
|
|
false, // is_native
|
|
script_class, position);
|
|
function.set_end_token_pos(end_position);
|
|
function.set_result_type(Object::void_type());
|
|
function.set_is_debuggable(false);
|
|
function.set_accessor_field(field);
|
|
function.set_is_declared_in_bytecode(true);
|
|
H.SetupFieldAccessorFunction(cls, function, type);
|
|
functions_->SetAt(function_index_++, function);
|
|
}
|
|
|
|
if ((flags & kHasAnnotationsFlag) != 0) {
|
|
intptr_t annotations_offset = helper_->reader_.ReadUInt() +
|
|
bytecode_component_->GetAnnotationsOffset();
|
|
ASSERT(annotations_offset > 0);
|
|
|
|
if (FLAG_enable_mirrors || has_pragma) {
|
|
Library& library = Library::Handle(Z, cls.library());
|
|
library.AddFieldMetadata(field, TokenPosition::kNoSource, 0,
|
|
annotations_offset);
|
|
if (has_pragma) {
|
|
// TODO(alexmarkov): read annotations right away using
|
|
// annotations_offset.
|
|
Thread* thread = H.thread();
|
|
NoOOBMessageScope no_msg_scope(thread);
|
|
NoReloadScope no_reload_scope(thread->isolate(), thread);
|
|
library.GetMetadata(field);
|
|
}
|
|
}
|
|
}
|
|
|
|
fields.SetAt(i, field);
|
|
}
|
|
|
|
if (cls.is_enum_class()) {
|
|
// Add static field 'const _deleted_enum_sentinel'.
|
|
field =
|
|
Field::New(Symbols::_DeletedEnumSentinel(),
|
|
/* is_static = */ true,
|
|
/* is_final = */ true,
|
|
/* is_const = */ true,
|
|
/* is_reflectable = */ false, cls, Object::dynamic_type(),
|
|
TokenPosition::kNoSource, TokenPosition::kNoSource);
|
|
|
|
fields.SetAt(num_fields, field);
|
|
}
|
|
|
|
if (!discard_fields) {
|
|
cls.SetFields(fields);
|
|
}
|
|
|
|
if (cls.IsTopLevel()) {
|
|
const Library& library = Library::Handle(Z, cls.library());
|
|
for (intptr_t i = 0, n = fields.Length(); i < n; ++i) {
|
|
field ^= fields.At(i);
|
|
name = field.name();
|
|
library.AddObject(field, name);
|
|
}
|
|
}
|
|
}
|
|
|
|
RawPatchClass* BytecodeReaderHelper::GetPatchClass(const Class& cls,
|
|
const Script& script) {
|
|
if (patch_class_ != nullptr && patch_class_->patched_class() == cls.raw() &&
|
|
patch_class_->script() == script.raw()) {
|
|
return patch_class_->raw();
|
|
}
|
|
if (patch_class_ == nullptr) {
|
|
patch_class_ = &PatchClass::Handle(Z);
|
|
}
|
|
*patch_class_ = PatchClass::New(cls, script);
|
|
return patch_class_->raw();
|
|
}
|
|
|
|
void BytecodeReaderHelper::ReadFunctionDeclarations(const Class& cls) {
|
|
// Function flags, must be in sync with FunctionDeclaration constants in
|
|
// pkg/vm/lib/bytecode/declarations.dart.
|
|
const int kIsConstructorFlag = 1 << 0;
|
|
const int kIsGetterFlag = 1 << 1;
|
|
const int kIsSetterFlag = 1 << 2;
|
|
const int kIsFactoryFlag = 1 << 3;
|
|
const int kIsStaticFlag = 1 << 4;
|
|
const int kIsAbstractFlag = 1 << 5;
|
|
const int kIsConstFlag = 1 << 6;
|
|
const int kHasOptionalPositionalParamsFlag = 1 << 7;
|
|
const int kHasOptionalNamedParamsFlag = 1 << 8;
|
|
const int kHasTypeParamsFlag = 1 << 9;
|
|
const int kIsReflectableFlag = 1 << 10;
|
|
const int kIsDebuggableFlag = 1 << 11;
|
|
const int kIsAsyncFlag = 1 << 12;
|
|
const int kIsAsyncStarFlag = 1 << 13;
|
|
const int kIsSyncStarFlag = 1 << 14;
|
|
// const int kIsForwardingStubFlag = 1 << 15;
|
|
const int kIsNoSuchMethodForwarderFlag = 1 << 16;
|
|
const int kIsNativeFlag = 1 << 17;
|
|
const int kIsExternalFlag = 1 << 18;
|
|
const int kHasSourcePositionsFlag = 1 << 19;
|
|
const int kHasAnnotationsFlag = 1 << 20;
|
|
const int kHasPragmaFlag = 1 << 21;
|
|
const int kHasCustomScriptFlag = 1 << 22;
|
|
|
|
const intptr_t num_functions = helper_->ReadListLength();
|
|
ASSERT(function_index_ + num_functions == functions_->Length());
|
|
|
|
if (function_index_ + num_functions == 0) {
|
|
return;
|
|
}
|
|
|
|
String& name = String::Handle(Z);
|
|
Object& script_class = Object::Handle(Z);
|
|
Function& function = Function::Handle(Z);
|
|
Array& parameter_types = Array::Handle(Z);
|
|
Array& parameter_names = Array::Handle(Z);
|
|
AbstractType& type = AbstractType::Handle(Z);
|
|
|
|
for (intptr_t i = 0; i < num_functions; ++i) {
|
|
intptr_t flags = helper_->reader_.ReadUInt();
|
|
|
|
const bool is_static = (flags & kIsStaticFlag) != 0;
|
|
const bool is_factory = (flags & kIsFactoryFlag) != 0;
|
|
const bool is_native = (flags & kIsNativeFlag) != 0;
|
|
const bool has_pragma = (flags & kHasPragmaFlag) != 0;
|
|
|
|
name ^= ReadObject();
|
|
|
|
if ((flags & kHasCustomScriptFlag) != 0) {
|
|
Script& script = Script::CheckedHandle(Z, ReadObject());
|
|
script_class = GetPatchClass(cls, script);
|
|
} else {
|
|
script_class = cls.raw();
|
|
}
|
|
|
|
TokenPosition position = TokenPosition::kNoSource;
|
|
TokenPosition end_position = TokenPosition::kNoSource;
|
|
if ((flags & kHasSourcePositionsFlag) != 0) {
|
|
position = helper_->ReadPosition();
|
|
end_position = helper_->ReadPosition();
|
|
}
|
|
|
|
RawFunction::Kind kind = RawFunction::kRegularFunction;
|
|
if ((flags & kIsGetterFlag) != 0) {
|
|
kind = RawFunction::kGetterFunction;
|
|
} else if ((flags & kIsSetterFlag) != 0) {
|
|
kind = RawFunction::kSetterFunction;
|
|
} else if ((flags & (kIsConstructorFlag | kIsFactoryFlag)) != 0) {
|
|
kind = RawFunction::kConstructor;
|
|
name = ConstructorName(cls, name);
|
|
}
|
|
|
|
// Expression evaluation functions are not supported yet.
|
|
ASSERT(!name.Equals(Symbols::DebugProcedureName()));
|
|
|
|
function = Function::New(name, kind, is_static, (flags & kIsConstFlag) != 0,
|
|
(flags & kIsAbstractFlag) != 0,
|
|
(flags & kIsExternalFlag) != 0, is_native,
|
|
script_class, position);
|
|
|
|
// Declare function scope as types (type parameters) in function
|
|
// signature may back-reference to the function being declared.
|
|
// At this moment, owner class is not fully loaded yet and it won't be
|
|
// able to serve function lookup requests.
|
|
FunctionScope function_scope(this, function, name, cls);
|
|
|
|
function.set_is_declared_in_bytecode(true);
|
|
function.set_has_pragma(has_pragma);
|
|
function.set_end_token_pos(end_position);
|
|
function.set_is_no_such_method_forwarder(
|
|
(flags & kIsNoSuchMethodForwarderFlag) != 0);
|
|
function.set_is_reflectable((flags & kIsReflectableFlag) != 0);
|
|
function.set_is_debuggable((flags & kIsDebuggableFlag) != 0);
|
|
|
|
if ((flags & kIsSyncStarFlag) != 0) {
|
|
function.set_modifier(RawFunction::kSyncGen);
|
|
} else if ((flags & kIsAsyncFlag) != 0) {
|
|
function.set_modifier(RawFunction::kAsync);
|
|
function.set_is_inlinable(!FLAG_causal_async_stacks);
|
|
} else if ((flags & kIsAsyncStarFlag) != 0) {
|
|
function.set_modifier(RawFunction::kAsyncGen);
|
|
function.set_is_inlinable(!FLAG_causal_async_stacks);
|
|
}
|
|
|
|
if ((flags & kHasTypeParamsFlag) != 0) {
|
|
ReadTypeParametersDeclaration(Class::Handle(Z), function);
|
|
}
|
|
|
|
const intptr_t num_implicit_params = (!is_static || is_factory) ? 1 : 0;
|
|
const intptr_t num_params =
|
|
num_implicit_params + helper_->reader_.ReadUInt();
|
|
|
|
intptr_t num_required_params = num_params;
|
|
if ((flags & (kHasOptionalPositionalParamsFlag |
|
|
kHasOptionalNamedParamsFlag)) != 0) {
|
|
num_required_params = num_implicit_params + helper_->reader_.ReadUInt();
|
|
}
|
|
|
|
function.set_num_fixed_parameters(num_required_params);
|
|
function.SetNumOptionalParameters(
|
|
num_params - num_required_params,
|
|
(flags & kHasOptionalNamedParamsFlag) == 0);
|
|
|
|
parameter_types = Array::New(num_params, Heap::kOld);
|
|
function.set_parameter_types(parameter_types);
|
|
|
|
parameter_names = Array::New(num_params, Heap::kOld);
|
|
function.set_parameter_names(parameter_names);
|
|
|
|
intptr_t param_index = 0;
|
|
if (!is_static) {
|
|
function.SetParameterTypeAt(param_index, H.GetDeclarationType(cls));
|
|
function.SetParameterNameAt(param_index, Symbols::This());
|
|
++param_index;
|
|
} else if (is_factory) {
|
|
function.SetParameterTypeAt(param_index, AbstractType::dynamic_type());
|
|
function.SetParameterNameAt(param_index,
|
|
Symbols::TypeArgumentsParameter());
|
|
++param_index;
|
|
}
|
|
|
|
for (; param_index < num_params; ++param_index) {
|
|
name ^= ReadObject();
|
|
parameter_names.SetAt(param_index, name);
|
|
type ^= ReadObject();
|
|
parameter_types.SetAt(param_index, type);
|
|
}
|
|
|
|
type ^= ReadObject();
|
|
function.set_result_type(type);
|
|
|
|
if (is_native) {
|
|
name ^= ReadObject();
|
|
function.set_native_name(name);
|
|
}
|
|
|
|
if ((flags & kIsAbstractFlag) == 0) {
|
|
const intptr_t code_offset = helper_->reader_.ReadUInt();
|
|
function.set_bytecode_offset(code_offset +
|
|
bytecode_component_->GetCodesOffset());
|
|
}
|
|
|
|
if ((flags & kHasAnnotationsFlag) != 0) {
|
|
const intptr_t annotations_offset =
|
|
helper_->reader_.ReadUInt() +
|
|
bytecode_component_->GetAnnotationsOffset();
|
|
ASSERT(annotations_offset > 0);
|
|
|
|
if (FLAG_enable_mirrors || has_pragma) {
|
|
Library& library = Library::Handle(Z, cls.library());
|
|
library.AddFunctionMetadata(function, TokenPosition::kNoSource, 0,
|
|
annotations_offset);
|
|
|
|
if (has_pragma) {
|
|
if (H.constants().IsNull() &&
|
|
library.raw() == Library::CoreLibrary()) {
|
|
// Bootstrapping, need to postpone evaluation of pragma annotations
|
|
// as classes are not fully loaded/finalized yet.
|
|
const auto& pragma_funcs = GrowableObjectArray::Handle(
|
|
Z, H.EnsurePotentialPragmaFunctions());
|
|
pragma_funcs.Add(function);
|
|
} else {
|
|
// TODO(alexmarkov): read annotations right away using
|
|
// annotations_offset.
|
|
Thread* thread = H.thread();
|
|
NoOOBMessageScope no_msg_scope(thread);
|
|
NoReloadScope no_reload_scope(thread->isolate(), thread);
|
|
library.GetMetadata(function);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
functions_->SetAt(function_index_++, function);
|
|
}
|
|
|
|
cls.SetFunctions(*functions_);
|
|
|
|
if (cls.IsTopLevel()) {
|
|
const Library& library = Library::Handle(Z, cls.library());
|
|
for (intptr_t i = 0, n = functions_->Length(); i < n; ++i) {
|
|
function ^= functions_->At(i);
|
|
name = function.name();
|
|
library.AddObject(function, name);
|
|
}
|
|
}
|
|
|
|
functions_ = nullptr;
|
|
}
|
|
|
|
void BytecodeReaderHelper::ReadParameterCovariance(
|
|
const Function& function,
|
|
BitVector* is_covariant,
|
|
BitVector* is_generic_covariant_impl) {
|
|
ASSERT(function.is_declared_in_bytecode());
|
|
|
|
const intptr_t num_params = function.NumParameters();
|
|
ASSERT(is_covariant->length() == num_params);
|
|
ASSERT(is_generic_covariant_impl->length() == num_params);
|
|
|
|
AlternativeReadingScope alt(&helper_->reader_, &H.metadata_payloads(),
|
|
function.bytecode_offset());
|
|
|
|
const intptr_t code_flags = helper_->reader_.ReadUInt();
|
|
if ((code_flags & Code::kHasParameterFlagsFlag) != 0) {
|
|
const intptr_t num_explicit_params = helper_->reader_.ReadUInt();
|
|
ASSERT(num_params ==
|
|
function.NumImplicitParameters() + num_explicit_params);
|
|
|
|
for (intptr_t i = function.NumImplicitParameters(); i < num_params; ++i) {
|
|
const intptr_t flags = helper_->reader_.ReadUInt();
|
|
|
|
if ((flags & Parameter::kIsCovariantFlag) != 0) {
|
|
is_covariant->Add(i);
|
|
}
|
|
if ((flags & Parameter::kIsGenericCovariantImplFlag) != 0) {
|
|
is_generic_covariant_impl->Add(i);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void BytecodeReaderHelper::ParseBytecodeFunction(
|
|
ParsedFunction* parsed_function,
|
|
const Function& function) {
|
|
switch (function.kind()) {
|
|
case RawFunction::kImplicitClosureFunction:
|
|
ParseForwarderFunction(parsed_function, function,
|
|
Function::Handle(Z, function.parent_function()));
|
|
break;
|
|
case RawFunction::kDynamicInvocationForwarder:
|
|
ParseForwarderFunction(
|
|
parsed_function, function,
|
|
Function::Handle(Z,
|
|
function.GetTargetOfDynamicInvocationForwarder()));
|
|
break;
|
|
case RawFunction::kImplicitGetter:
|
|
case RawFunction::kImplicitSetter:
|
|
case RawFunction::kImplicitStaticFinalGetter:
|
|
if (IsBytecodeFieldInitializer(function, Z)) {
|
|
ReadCode(function, function.bytecode_offset());
|
|
} else {
|
|
BytecodeScopeBuilder(parsed_function).BuildScopes();
|
|
}
|
|
break;
|
|
case RawFunction::kMethodExtractor:
|
|
BytecodeScopeBuilder(parsed_function).BuildScopes();
|
|
break;
|
|
case RawFunction::kRegularFunction:
|
|
case RawFunction::kGetterFunction:
|
|
case RawFunction::kSetterFunction:
|
|
case RawFunction::kClosureFunction:
|
|
case RawFunction::kConstructor:
|
|
ReadCode(function, function.bytecode_offset());
|
|
break;
|
|
case RawFunction::kNoSuchMethodDispatcher:
|
|
case RawFunction::kInvokeFieldDispatcher:
|
|
case RawFunction::kSignatureFunction:
|
|
case RawFunction::kIrregexpFunction:
|
|
case RawFunction::kFfiTrampoline:
|
|
UNREACHABLE();
|
|
break;
|
|
}
|
|
}
|
|
|
|
void BytecodeReaderHelper::ParseForwarderFunction(
|
|
ParsedFunction* parsed_function,
|
|
const Function& function,
|
|
const Function& target) {
|
|
ASSERT(function.IsImplicitClosureFunction() ||
|
|
function.IsDynamicInvocationForwarder());
|
|
|
|
ASSERT(target.is_declared_in_bytecode());
|
|
|
|
if (function.IsDynamicInvocationForwarder() &&
|
|
target.IsImplicitSetterFunction()) {
|
|
BytecodeScopeBuilder(parsed_function).BuildScopes();
|
|
return;
|
|
}
|
|
|
|
if (!target.HasBytecode()) {
|
|
ReadCode(target, target.bytecode_offset());
|
|
}
|
|
|
|
BytecodeScopeBuilder(parsed_function).BuildScopes();
|
|
|
|
const auto& target_bytecode = Bytecode::Handle(Z, target.bytecode());
|
|
const auto& obj_pool = ObjectPool::Handle(Z, target_bytecode.object_pool());
|
|
|
|
AlternativeReadingScope alt(&helper_->reader_, &H.metadata_payloads(),
|
|
target.bytecode_offset());
|
|
|
|
const intptr_t flags = helper_->reader_.ReadUInt();
|
|
const bool has_parameters_flags = (flags & Code::kHasParameterFlagsFlag) != 0;
|
|
const bool has_forwarding_stub_target =
|
|
(flags & Code::kHasForwardingStubTargetFlag) != 0;
|
|
const bool has_default_function_type_args =
|
|
(flags & Code::kHasDefaultFunctionTypeArgsFlag) != 0;
|
|
|
|
if (has_parameters_flags) {
|
|
const intptr_t num_params = helper_->reader_.ReadUInt();
|
|
const intptr_t num_implicit_params = function.NumImplicitParameters();
|
|
for (intptr_t i = 0; i < num_params; ++i) {
|
|
const intptr_t flags = helper_->reader_.ReadUInt();
|
|
|
|
bool is_covariant = (flags & Parameter::kIsCovariantFlag) != 0;
|
|
bool is_generic_covariant_impl =
|
|
(flags & Parameter::kIsGenericCovariantImplFlag) != 0;
|
|
|
|
LocalVariable* variable =
|
|
parsed_function->ParameterVariable(num_implicit_params + i);
|
|
|
|
if (is_covariant) {
|
|
variable->set_is_explicit_covariant_parameter();
|
|
}
|
|
|
|
const bool checked_in_method_body =
|
|
is_covariant || is_generic_covariant_impl;
|
|
|
|
if (checked_in_method_body) {
|
|
variable->set_type_check_mode(LocalVariable::kSkipTypeCheck);
|
|
} else {
|
|
ASSERT(variable->type_check_mode() == LocalVariable::kDoTypeCheck);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (has_forwarding_stub_target) {
|
|
const intptr_t cp_index = helper_->reader_.ReadUInt();
|
|
const auto& forwarding_stub_target =
|
|
Function::CheckedZoneHandle(Z, obj_pool.ObjectAt(cp_index));
|
|
parsed_function->MarkForwardingStub(&forwarding_stub_target);
|
|
}
|
|
|
|
if (has_default_function_type_args) {
|
|
ASSERT(function.IsGeneric());
|
|
const intptr_t cp_index = helper_->reader_.ReadUInt();
|
|
const auto& type_args =
|
|
TypeArguments::CheckedHandle(Z, obj_pool.ObjectAt(cp_index));
|
|
parsed_function->SetDefaultFunctionTypeArguments(type_args);
|
|
}
|
|
|
|
if (function.HasOptionalParameters()) {
|
|
const KBCInstr* raw_bytecode =
|
|
reinterpret_cast<KBCInstr*>(target_bytecode.PayloadStart());
|
|
KBCInstr entry = raw_bytecode[0];
|
|
ASSERT(KernelBytecode::DecodeOpcode(entry) ==
|
|
KernelBytecode::kEntryOptional);
|
|
ASSERT(KernelBytecode::DecodeB(entry) ==
|
|
function.NumOptionalPositionalParameters());
|
|
ASSERT(KernelBytecode::DecodeC(entry) ==
|
|
function.NumOptionalNamedParameters());
|
|
|
|
const intptr_t num_opt_params = function.NumOptionalParameters();
|
|
ZoneGrowableArray<const Instance*>* default_values =
|
|
new (Z) ZoneGrowableArray<const Instance*>(Z, num_opt_params);
|
|
|
|
if (function.HasOptionalPositionalParameters()) {
|
|
for (intptr_t i = 0, n = function.NumOptionalPositionalParameters();
|
|
i < n; ++i) {
|
|
const KBCInstr load = raw_bytecode[1 + i];
|
|
ASSERT(KernelBytecode::DecodeOpcode(load) ==
|
|
KernelBytecode::kLoadConstant);
|
|
const auto& value = Instance::CheckedZoneHandle(
|
|
Z, obj_pool.ObjectAt(KernelBytecode::DecodeD(load)));
|
|
default_values->Add(&value);
|
|
}
|
|
} else {
|
|
const intptr_t num_fixed_params = function.num_fixed_parameters();
|
|
auto& param_name = String::Handle(Z);
|
|
default_values->EnsureLength(num_opt_params, nullptr);
|
|
for (intptr_t i = 0; i < num_opt_params; ++i) {
|
|
const KBCInstr load_name = raw_bytecode[1 + 2 * i];
|
|
const KBCInstr load_value = raw_bytecode[1 + 2 * i + 1];
|
|
ASSERT(KernelBytecode::DecodeOpcode(load_name) ==
|
|
KernelBytecode::kLoadConstant);
|
|
ASSERT(KernelBytecode::DecodeOpcode(load_value) ==
|
|
KernelBytecode::kLoadConstant);
|
|
param_name ^= obj_pool.ObjectAt(KernelBytecode::DecodeD(load_name));
|
|
const auto& value = Instance::CheckedZoneHandle(
|
|
Z, obj_pool.ObjectAt(KernelBytecode::DecodeD(load_value)));
|
|
|
|
const intptr_t num_params = function.NumParameters();
|
|
intptr_t param_index = num_fixed_params;
|
|
for (; param_index < num_params; ++param_index) {
|
|
if (function.ParameterNameAt(param_index) == param_name.raw()) {
|
|
break;
|
|
}
|
|
}
|
|
ASSERT(param_index < num_params);
|
|
ASSERT(default_values->At(param_index - num_fixed_params) == nullptr);
|
|
(*default_values)[param_index - num_fixed_params] = &value;
|
|
}
|
|
}
|
|
|
|
parsed_function->set_default_parameter_values(default_values);
|
|
}
|
|
}
|
|
|
|
RawLibrary* BytecodeReaderHelper::ReadMain() {
|
|
return Library::RawCast(ReadObject());
|
|
}
|
|
|
|
intptr_t BytecodeComponentData::GetVersion() const {
|
|
return Smi::Value(Smi::RawCast(data_.At(kVersion)));
|
|
}
|
|
|
|
intptr_t BytecodeComponentData::GetStringsHeaderOffset() const {
|
|
return Smi::Value(Smi::RawCast(data_.At(kStringsHeaderOffset)));
|
|
}
|
|
|
|
intptr_t BytecodeComponentData::GetStringsContentsOffset() const {
|
|
return Smi::Value(Smi::RawCast(data_.At(kStringsContentsOffset)));
|
|
}
|
|
|
|
intptr_t BytecodeComponentData::GetObjectsContentsOffset() const {
|
|
return Smi::Value(Smi::RawCast(data_.At(kObjectsContentsOffset)));
|
|
}
|
|
|
|
intptr_t BytecodeComponentData::GetMainOffset() const {
|
|
return Smi::Value(Smi::RawCast(data_.At(kMainOffset)));
|
|
}
|
|
|
|
intptr_t BytecodeComponentData::GetMembersOffset() const {
|
|
return Smi::Value(Smi::RawCast(data_.At(kMembersOffset)));
|
|
}
|
|
|
|
intptr_t BytecodeComponentData::GetCodesOffset() const {
|
|
return Smi::Value(Smi::RawCast(data_.At(kCodesOffset)));
|
|
}
|
|
|
|
intptr_t BytecodeComponentData::GetSourcePositionsOffset() const {
|
|
return Smi::Value(Smi::RawCast(data_.At(kSourcePositionsOffset)));
|
|
}
|
|
|
|
intptr_t BytecodeComponentData::GetAnnotationsOffset() const {
|
|
return Smi::Value(Smi::RawCast(data_.At(kAnnotationsOffset)));
|
|
}
|
|
|
|
void BytecodeComponentData::SetObject(intptr_t index, const Object& obj) const {
|
|
data_.SetAt(kNumFields + index, obj);
|
|
}
|
|
|
|
RawObject* BytecodeComponentData::GetObject(intptr_t index) const {
|
|
return data_.At(kNumFields + index);
|
|
}
|
|
|
|
RawArray* BytecodeComponentData::New(Zone* zone,
|
|
intptr_t version,
|
|
intptr_t num_objects,
|
|
intptr_t strings_header_offset,
|
|
intptr_t strings_contents_offset,
|
|
intptr_t objects_contents_offset,
|
|
intptr_t main_offset,
|
|
intptr_t members_offset,
|
|
intptr_t codes_offset,
|
|
intptr_t source_positions_offset,
|
|
intptr_t annotations_offset,
|
|
Heap::Space space) {
|
|
const Array& data =
|
|
Array::Handle(zone, Array::New(kNumFields + num_objects, space));
|
|
Smi& smi_handle = Smi::Handle(zone);
|
|
|
|
smi_handle = Smi::New(version);
|
|
data.SetAt(kVersion, smi_handle);
|
|
|
|
smi_handle = Smi::New(strings_header_offset);
|
|
data.SetAt(kStringsHeaderOffset, smi_handle);
|
|
|
|
smi_handle = Smi::New(strings_contents_offset);
|
|
data.SetAt(kStringsContentsOffset, smi_handle);
|
|
|
|
smi_handle = Smi::New(objects_contents_offset);
|
|
data.SetAt(kObjectsContentsOffset, smi_handle);
|
|
|
|
smi_handle = Smi::New(main_offset);
|
|
data.SetAt(kMainOffset, smi_handle);
|
|
|
|
smi_handle = Smi::New(members_offset);
|
|
data.SetAt(kMembersOffset, smi_handle);
|
|
|
|
smi_handle = Smi::New(codes_offset);
|
|
data.SetAt(kCodesOffset, smi_handle);
|
|
|
|
smi_handle = Smi::New(source_positions_offset);
|
|
data.SetAt(kSourcePositionsOffset, smi_handle);
|
|
|
|
smi_handle = Smi::New(annotations_offset);
|
|
data.SetAt(kAnnotationsOffset, smi_handle);
|
|
|
|
return data.raw();
|
|
}
|
|
|
|
RawError* BytecodeReader::ReadFunctionBytecode(Thread* thread,
|
|
const Function& function) {
|
|
ASSERT(!FLAG_precompiled_mode);
|
|
ASSERT(!function.HasBytecode());
|
|
ASSERT(thread->sticky_error() == Error::null());
|
|
ASSERT(Thread::Current()->IsMutatorThread());
|
|
|
|
VMTagScope tagScope(thread, VMTag::kLoadBytecodeTagId);
|
|
|
|
LongJumpScope jump;
|
|
if (setjmp(*jump.Set()) == 0) {
|
|
StackZone stack_zone(thread);
|
|
Zone* const zone = stack_zone.GetZone();
|
|
HANDLESCOPE(thread);
|
|
CompilerState compiler_state(thread);
|
|
|
|
const Script& script = Script::Handle(zone, function.script());
|
|
TranslationHelper translation_helper(thread);
|
|
translation_helper.InitFromScript(script);
|
|
|
|
KernelReaderHelper reader_helper(
|
|
zone, &translation_helper, script,
|
|
ExternalTypedData::Handle(zone, function.KernelData()),
|
|
function.KernelDataProgramOffset());
|
|
ActiveClass active_class;
|
|
|
|
BytecodeMetadataHelper bytecode_metadata_helper(&reader_helper,
|
|
&active_class);
|
|
|
|
// Setup a [ActiveClassScope] and a [ActiveMemberScope] which will be used
|
|
// e.g. for type translation.
|
|
const Class& klass = Class::Handle(zone, function.Owner());
|
|
Function& outermost_function =
|
|
Function::Handle(zone, function.GetOutermostFunction());
|
|
|
|
ActiveClassScope active_class_scope(&active_class, &klass);
|
|
ActiveMemberScope active_member(&active_class, &outermost_function);
|
|
ActiveTypeParametersScope active_type_params(&active_class, function, zone);
|
|
|
|
bytecode_metadata_helper.ReadMetadata(function);
|
|
|
|
return Error::null();
|
|
} else {
|
|
return thread->StealStickyError();
|
|
}
|
|
}
|
|
|
|
RawObject* BytecodeReader::ReadAnnotation(const Field& annotation_field) {
|
|
ASSERT(annotation_field.is_declared_in_bytecode());
|
|
|
|
Thread* thread = Thread::Current();
|
|
Zone* zone = thread->zone();
|
|
ASSERT(thread->IsMutatorThread());
|
|
|
|
const Script& script = Script::Handle(zone, annotation_field.Script());
|
|
TranslationHelper translation_helper(thread);
|
|
translation_helper.InitFromScript(script);
|
|
|
|
KernelReaderHelper reader_helper(
|
|
zone, &translation_helper, script,
|
|
ExternalTypedData::Handle(zone, annotation_field.KernelData()),
|
|
annotation_field.KernelDataProgramOffset());
|
|
ActiveClass active_class;
|
|
|
|
BytecodeMetadataHelper bytecode_metadata_helper(&reader_helper,
|
|
&active_class);
|
|
|
|
return bytecode_metadata_helper.ReadAnnotation(
|
|
annotation_field.bytecode_offset());
|
|
}
|
|
|
|
bool IsBytecodeFieldInitializer(const Function& function, Zone* zone) {
|
|
if (IsFieldInitializer(function, zone)) {
|
|
return true;
|
|
}
|
|
if (function.kind() == RawFunction::kImplicitStaticFinalGetter) {
|
|
const auto& field = Field::Handle(zone, function.accessor_field());
|
|
return field.is_declared_in_bytecode() && field.is_const() &&
|
|
field.has_initializer();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
} // namespace kernel
|
|
} // namespace dart
|
|
|
|
#endif // !defined(DART_PRECOMPILED_RUNTIME)
|