| // 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-utils-gen.h" |
| #include "src/code-stub-assembler.h" |
| #include "src/objects-inl.h" |
| #include "src/wasm/wasm-objects.h" |
| #include "src/wasm/wasm-opcodes.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| class WasmBuiltinsAssembler : public CodeStubAssembler { |
| public: |
| explicit WasmBuiltinsAssembler(compiler::CodeAssemblerState* state) |
| : CodeStubAssembler(state) {} |
| |
| protected: |
| TNode<Object> UncheckedParameter(int index) { |
| return UncheckedCast<Object>(Parameter(index)); |
| } |
| |
| TNode<Code> LoadBuiltinFromFrame(Builtins::Name id) { |
| TNode<Object> instance = LoadInstanceFromFrame(); |
| TNode<IntPtrT> roots = UncheckedCast<IntPtrT>( |
| Load(MachineType::Pointer(), instance, |
| IntPtrConstant(WasmInstanceObject::kRootsArrayAddressOffset - |
| kHeapObjectTag))); |
| TNode<Code> target = UncheckedCast<Code>(Load( |
| MachineType::TaggedPointer(), roots, |
| IntPtrConstant(Heap::roots_to_builtins_offset() + id * kPointerSize))); |
| return target; |
| } |
| |
| TNode<Object> LoadInstanceFromFrame() { |
| return UncheckedCast<Object>( |
| LoadFromParentFrame(WasmCompiledFrameConstants::kWasmInstanceOffset)); |
| } |
| |
| TNode<Code> LoadCEntryFromInstance(TNode<Object> instance) { |
| return UncheckedCast<Code>( |
| Load(MachineType::AnyTagged(), instance, |
| IntPtrConstant(WasmInstanceObject::kCEntryStubOffset - |
| kHeapObjectTag))); |
| } |
| |
| TNode<Code> LoadCEntryFromFrame() { |
| return LoadCEntryFromInstance(LoadInstanceFromFrame()); |
| } |
| }; |
| |
| TF_BUILTIN(WasmAllocateHeapNumber, WasmBuiltinsAssembler) { |
| TNode<Code> target = LoadBuiltinFromFrame(Builtins::kAllocateHeapNumber); |
| TailCallStub(AllocateHeapNumberDescriptor(), target, NoContextConstant()); |
| } |
| |
| TF_BUILTIN(WasmArgumentsAdaptor, WasmBuiltinsAssembler) { |
| TNode<Object> context = UncheckedParameter(Descriptor::kContext); |
| TNode<Object> function = UncheckedParameter(Descriptor::kTarget); |
| TNode<Object> new_target = UncheckedParameter(Descriptor::kNewTarget); |
| TNode<Object> argc1 = UncheckedParameter(Descriptor::kActualArgumentsCount); |
| TNode<Object> argc2 = UncheckedParameter(Descriptor::kExpectedArgumentsCount); |
| TNode<Code> target = |
| LoadBuiltinFromFrame(Builtins::kArgumentsAdaptorTrampoline); |
| TailCallStub(ArgumentAdaptorDescriptor{}, target, context, function, |
| new_target, argc1, argc2); |
| } |
| |
| TF_BUILTIN(WasmCallJavaScript, WasmBuiltinsAssembler) { |
| TNode<Object> context = UncheckedParameter(Descriptor::kContext); |
| TNode<Object> function = UncheckedParameter(Descriptor::kFunction); |
| TNode<Object> argc = UncheckedParameter(Descriptor::kActualArgumentsCount); |
| TNode<Code> target = LoadBuiltinFromFrame(Builtins::kCall_ReceiverIsAny); |
| TailCallStub(CallTrampolineDescriptor{}, target, context, function, argc); |
| } |
| |
| TF_BUILTIN(WasmToNumber, WasmBuiltinsAssembler) { |
| TNode<Object> context = UncheckedParameter(Descriptor::kContext); |
| TNode<Object> argument = UncheckedParameter(Descriptor::kArgument); |
| TNode<Code> target = LoadBuiltinFromFrame(Builtins::kToNumber); |
| TailCallStub(TypeConversionDescriptor(), target, context, argument); |
| } |
| |
| TF_BUILTIN(WasmStackGuard, WasmBuiltinsAssembler) { |
| TNode<Code> centry = LoadCEntryFromFrame(); |
| TailCallRuntimeWithCEntry(Runtime::kWasmStackGuard, centry, |
| NoContextConstant()); |
| } |
| |
| TF_BUILTIN(WasmGrowMemory, WasmBuiltinsAssembler) { |
| TNode<Int32T> num_pages = |
| UncheckedCast<Int32T>(Parameter(Descriptor::kNumPages)); |
| Label num_pages_out_of_range(this, Label::kDeferred); |
| |
| TNode<BoolT> num_pages_fits_in_smi = |
| IsValidPositiveSmi(ChangeInt32ToIntPtr(num_pages)); |
| GotoIfNot(num_pages_fits_in_smi, &num_pages_out_of_range); |
| |
| TNode<Smi> num_pages_smi = SmiFromInt32(num_pages); |
| TNode<Object> instance = LoadInstanceFromFrame(); |
| TNode<Code> centry = LoadCEntryFromInstance(instance); |
| TNode<Smi> ret_smi = UncheckedCast<Smi>( |
| CallRuntimeWithCEntry(Runtime::kWasmGrowMemory, centry, |
| NoContextConstant(), instance, num_pages_smi)); |
| TNode<Int32T> ret = SmiToInt32(ret_smi); |
| ReturnRaw(ret); |
| |
| BIND(&num_pages_out_of_range); |
| ReturnRaw(Int32Constant(-1)); |
| } |
| |
| #define DECLARE_ENUM(name) \ |
| TF_BUILTIN(ThrowWasm##name, WasmBuiltinsAssembler) { \ |
| TNode<Code> centry = LoadCEntryFromFrame(); \ |
| int message_id = wasm::WasmOpcodes::TrapReasonToMessageId(wasm::k##name); \ |
| TailCallRuntimeWithCEntry(Runtime::kThrowWasmError, centry, \ |
| NoContextConstant(), SmiConstant(message_id)); \ |
| } |
| FOREACH_WASM_TRAPREASON(DECLARE_ENUM) |
| #undef DECLARE_ENUM |
| |
| } // namespace internal |
| } // namespace v8 |