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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"
#include "src/wasm/wasm-opcodes.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) {
TNode<Float32T> val = UncheckedCast<Float32T>(Parameter(Descriptor::kValue));
Return(ChangeFloat32ToTagged(val));
}
TF_BUILTIN(WasmFloat64ToNumber, WasmBuiltinsAssembler) {
TNode<Float64T> val = UncheckedCast<Float64T>(Parameter(Descriptor::kValue));
Return(ChangeFloat64ToTagged(val));
}
TF_BUILTIN(WasmI32AtomicWait32, WasmBuiltinsAssembler) {
if (!Is32()) {
Unreachable();
return;
}
TNode<Uint32T> address =
UncheckedCast<Uint32T>(Parameter(Descriptor::kAddress));
TNode<Number> address_number = ChangeUint32ToTagged(address);
TNode<Int32T> expected_value =
UncheckedCast<Int32T>(Parameter(Descriptor::kExpectedValue));
TNode<Number> expected_value_number = ChangeInt32ToTagged(expected_value);
TNode<IntPtrT> timeout_low =
UncheckedCast<IntPtrT>(Parameter(Descriptor::kTimeoutLow));
TNode<IntPtrT> timeout_high =
UncheckedCast<IntPtrT>(Parameter(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;
}
TNode<Uint32T> address =
UncheckedCast<Uint32T>(Parameter(Descriptor::kAddress));
TNode<Number> address_number = ChangeUint32ToTagged(address);
TNode<IntPtrT> expected_value_low =
UncheckedCast<IntPtrT>(Parameter(Descriptor::kExpectedValueLow));
TNode<IntPtrT> expected_value_high =
UncheckedCast<IntPtrT>(Parameter(Descriptor::kExpectedValueHigh));
TNode<BigInt> expected_value =
BigIntFromInt32Pair(expected_value_low, expected_value_high);
TNode<IntPtrT> timeout_low =
UncheckedCast<IntPtrT>(Parameter(Descriptor::kTimeoutLow));
TNode<IntPtrT> timeout_high =
UncheckedCast<IntPtrT>(Parameter(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(WasmAllocateArray, WasmBuiltinsAssembler) {
TNode<WasmInstanceObject> instance = LoadInstanceFromFrame();
TNode<Smi> map_index = CAST(Parameter(Descriptor::kMapIndex));
TNode<Smi> length = CAST(Parameter(Descriptor::kLength));
TNode<Smi> element_size = CAST(Parameter(Descriptor::kElementSize));
TNode<FixedArray> maps_list = LoadObjectField<FixedArray>(
instance, WasmInstanceObject::kManagedObjectMapsOffset);
TNode<Map> map = CAST(LoadFixedArrayElement(maps_list, map_index));
TNode<IntPtrT> untagged_length = SmiUntag(length);
// instance_size = WasmArray::kHeaderSize
// + RoundUp(element_size * length, kObjectAlignment)
TNode<IntPtrT> raw_size = IntPtrMul(SmiUntag(element_size), untagged_length);
TNode<IntPtrT> rounded_size =
WordAnd(IntPtrAdd(raw_size, IntPtrConstant(kObjectAlignmentMask)),
IntPtrConstant(~kObjectAlignmentMask));
TNode<IntPtrT> instance_size =
IntPtrAdd(IntPtrConstant(WasmArray::kHeaderSize), rounded_size);
TNode<WasmArray> result = UncheckedCast<WasmArray>(Allocate(instance_size));
StoreMap(result, map);
StoreObjectFieldNoWriteBarrier(result, WasmArray::kLengthOffset,
TruncateIntPtrToInt32(untagged_length));
Return(result);
}
} // namespace internal
} // namespace v8
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