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// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/builtins/builtins-wasm-gen.h"
#include "src/builtins/builtins-utils-gen.h"
#include "src/codegen/code-stub-assembler.h"
#include "src/codegen/interface-descriptors.h"
#include "src/objects/objects-inl.h"
#include "src/wasm/wasm-objects.h"
namespace v8 {
namespace internal {
TNode<WasmInstanceObject> WasmBuiltinsAssembler::LoadInstanceFromFrame() {
return CAST(LoadFromParentFrame(WasmFrameConstants::kWasmInstanceOffset));
}
TNode<NativeContext> WasmBuiltinsAssembler::LoadContextFromInstance(
TNode<WasmInstanceObject> instance) {
return CAST(Load(MachineType::AnyTagged(), instance,
IntPtrConstant(WasmInstanceObject::kNativeContextOffset -
kHeapObjectTag)));
}
TNode<FixedArray> WasmBuiltinsAssembler::LoadTablesFromInstance(
TNode<WasmInstanceObject> instance) {
return LoadObjectField<FixedArray>(instance,
WasmInstanceObject::kTablesOffset);
}
TNode<FixedArray> WasmBuiltinsAssembler::LoadExternalFunctionsFromInstance(
TNode<WasmInstanceObject> instance) {
return LoadObjectField<FixedArray>(
instance, WasmInstanceObject::kWasmExternalFunctionsOffset);
}
TNode<FixedArray> WasmBuiltinsAssembler::LoadManagedObjectMapsFromInstance(
TNode<WasmInstanceObject> instance) {
return LoadObjectField<FixedArray>(
instance, WasmInstanceObject::kManagedObjectMapsOffset);
}
TF_BUILTIN(WasmFloat32ToNumber, WasmBuiltinsAssembler) {
auto val = UncheckedParameter<Float32T>(Descriptor::kValue);
Return(ChangeFloat32ToTagged(val));
}
TF_BUILTIN(WasmFloat64ToNumber, WasmBuiltinsAssembler) {
auto val = UncheckedParameter<Float64T>(Descriptor::kValue);
Return(ChangeFloat64ToTagged(val));
}
TF_BUILTIN(WasmI32AtomicWait32, WasmBuiltinsAssembler) {
if (!Is32()) {
Unreachable();
return;
}
auto address = UncheckedParameter<Uint32T>(Descriptor::kAddress);
TNode<Number> address_number = ChangeUint32ToTagged(address);
auto expected_value = UncheckedParameter<Int32T>(Descriptor::kExpectedValue);
TNode<Number> expected_value_number = ChangeInt32ToTagged(expected_value);
auto timeout_low = UncheckedParameter<IntPtrT>(Descriptor::kTimeoutLow);
auto timeout_high = UncheckedParameter<IntPtrT>(Descriptor::kTimeoutHigh);
TNode<BigInt> timeout = BigIntFromInt32Pair(timeout_low, timeout_high);
TNode<WasmInstanceObject> instance = LoadInstanceFromFrame();
TNode<Context> context = LoadContextFromInstance(instance);
TNode<Smi> result_smi =
CAST(CallRuntime(Runtime::kWasmI32AtomicWait, context, instance,
address_number, expected_value_number, timeout));
Return(Unsigned(SmiToInt32(result_smi)));
}
TF_BUILTIN(WasmI64AtomicWait32, WasmBuiltinsAssembler) {
if (!Is32()) {
Unreachable();
return;
}
auto address = UncheckedParameter<Uint32T>(Descriptor::kAddress);
TNode<Number> address_number = ChangeUint32ToTagged(address);
auto expected_value_low =
UncheckedParameter<IntPtrT>(Descriptor::kExpectedValueLow);
auto expected_value_high =
UncheckedParameter<IntPtrT>(Descriptor::kExpectedValueHigh);
TNode<BigInt> expected_value =
BigIntFromInt32Pair(expected_value_low, expected_value_high);
auto timeout_low = UncheckedParameter<IntPtrT>(Descriptor::kTimeoutLow);
auto timeout_high = UncheckedParameter<IntPtrT>(Descriptor::kTimeoutHigh);
TNode<BigInt> timeout = BigIntFromInt32Pair(timeout_low, timeout_high);
TNode<WasmInstanceObject> instance = LoadInstanceFromFrame();
TNode<Context> context = LoadContextFromInstance(instance);
TNode<Smi> result_smi =
CAST(CallRuntime(Runtime::kWasmI64AtomicWait, context, instance,
address_number, expected_value, timeout));
Return(Unsigned(SmiToInt32(result_smi)));
}
TF_BUILTIN(JSToWasmLazyDeoptContinuation, WasmBuiltinsAssembler) {
// Reset thread_in_wasm_flag.
TNode<ExternalReference> thread_in_wasm_flag_address_address =
ExternalConstant(
ExternalReference::thread_in_wasm_flag_address_address(isolate()));
auto thread_in_wasm_flag_address =
Load<RawPtrT>(thread_in_wasm_flag_address_address);
StoreNoWriteBarrier(MachineRepresentation::kWord32,
thread_in_wasm_flag_address, Int32Constant(0));
// Return the argument.
auto value = Parameter<Object>(Descriptor::kArgument);
Return(value);
}
} // namespace internal
} // namespace v8
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