text: // Copyright 2012 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/arm64/interface-descriptors-arm64.h"
  
  #if V8_TARGET_ARCH_ARM64
  
  #include "src/interface-descriptors.h"
  
  namespace v8 {
  namespace internal {
  
  const Register CallInterfaceDescriptor::ContextRegister() { return cp; }
  
  
  const Register LoadDescriptor::ReceiverRegister() { return x1; }
  const Register LoadDescriptor::NameRegister() { return x2; }
  const Register LoadDescriptor::SlotRegister() { return x0; }
  
  
  const Register LoadWithVectorDescriptor::VectorRegister() { return x3; }
  
  
  const Register StoreDescriptor::ReceiverRegister() { return x1; }
  const Register StoreDescriptor::NameRegister() { return x2; }
  const Register StoreDescriptor::ValueRegister() { return x0; }
  
  
  const Register VectorStoreICTrampolineDescriptor::SlotRegister() { return x4; }
  
  
  const Register VectorStoreICDescriptor::VectorRegister() { return x3; }
  
  
  const Register VectorStoreTransitionDescriptor::SlotRegister() { return x4; }
  const Register VectorStoreTransitionDescriptor::VectorRegister() { return x3; }
  const Register VectorStoreTransitionDescriptor::MapRegister() { return x5; }
  
  
  const Register StoreTransitionDescriptor::MapRegister() { return x3; }
  
  
  const Register LoadGlobalViaContextDescriptor::SlotRegister() { return x2; }
  
  
  const Register StoreGlobalViaContextDescriptor::SlotRegister() { return x2; }
  const Register StoreGlobalViaContextDescriptor::ValueRegister() { return x0; }
  
  
  const Register StringCompareDescriptor::LeftRegister() { return x1; }
  const Register StringCompareDescriptor::RightRegister() { return x0; }
  
  const Register ApiGetterDescriptor::HolderRegister() { return x0; }
  const Register ApiGetterDescriptor::CallbackRegister() { return x3; }
  
  const Register MathPowTaggedDescriptor::exponent() { return x11; }
  
  
  const Register MathPowIntegerDescriptor::exponent() { return x12; }
  
  
  const Register GrowArrayElementsDescriptor::ObjectRegister() { return x0; }
  const Register GrowArrayElementsDescriptor::KeyRegister() { return x3; }
  
  const Register HasPropertyDescriptor::ObjectRegister() { return x0; }
  const Register HasPropertyDescriptor::KeyRegister() { return x3; }
  
  void FastNewClosureDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x2: function info
    Register registers[] = {x2};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void FastNewContextDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x1: function
    Register registers[] = {x1};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  void FastNewObjectDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    Register registers[] = {x1, x3};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  void FastNewRestParameterDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x1: function
    Register registers[] = {x1};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void FastNewSloppyArgumentsDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x1: function
    Register registers[] = {x1};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void FastNewStrictArgumentsDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x1: function
    Register registers[] = {x1};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  // static
  const Register TypeConversionDescriptor::ArgumentRegister() { return x0; }
  
  void TypeofDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    Register registers[] = {x3};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void FastCloneRegExpDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x3: closure
    // x2: object literal index
    // x1: constant properties
    // x0: object literal flags
    Register registers[] = {x3, x2, x1, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void FastCloneShallowArrayDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x3: closure
    // x2: array literal index
    // x1: constant elements
    Register registers[] = {x3, x2, x1};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void FastCloneShallowObjectDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x3: closure
    // x2: object literal index
    // x1: constant properties
    // x0: object literal flags
    Register registers[] = {x3, x2, x1, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void CreateAllocationSiteDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x2: feedback vector
    // x3: call feedback slot
    Register registers[] = {x2, x3};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void CreateWeakCellDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x2: feedback vector
    // x3: call feedback slot
    // x1: tagged value to put in the weak cell
    Register registers[] = {x2, x3, x1};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void CallFunctionDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x1  function    the function to call
    Register registers[] = {x1};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void CallFunctionWithFeedbackDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    Register registers[] = {x1, x3};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void CallFunctionWithFeedbackAndVectorDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    Register registers[] = {x1, x3, x2};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void CallConstructDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x0 : number of arguments
    // x1 : the function to call
    // x2 : feedback vector
    // x3 : slot in feedback vector (Smi, for RecordCallTarget)
    // x4 : new target (for IsSuperConstructorCall)
    // TODO(turbofan): So far we don't gather type feedback and hence skip the
    // slot parameter, but ArrayConstructStub needs the vector to be undefined.
    Register registers[] = {x0, x1, x4, x2};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void CallTrampolineDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x1: target
    // x0: number of arguments
    Register registers[] = {x1, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void ConstructStubDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x3: new target
    // x1: target
    // x0: number of arguments
    // x2: allocation site or undefined
    Register registers[] = {x1, x3, x0, x2};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void ConstructTrampolineDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x3: new target
    // x1: target
    // x0: number of arguments
    Register registers[] = {x1, x3, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void RegExpConstructResultDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x2: length
    // x1: index (of last match)
    // x0: string
    Register registers[] = {x2, x1, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void TransitionElementsKindDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x0: value (js_array)
    // x1: to_map
    Register registers[] = {x0, x1};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void AllocateHeapNumberDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    data->InitializePlatformSpecific(0, nullptr, nullptr);
  }
  
  #define SIMD128_ALLOC_DESC(TYPE, Type, type, lane_count, lane_type) \
    void Allocate##Type##Descriptor::InitializePlatformSpecific(      \
        CallInterfaceDescriptorData* data) {                          \
      data->InitializePlatformSpecific(0, nullptr, nullptr);          \
    }
  SIMD128_TYPES(SIMD128_ALLOC_DESC)
  #undef SIMD128_ALLOC_DESC
  
  void ArrayNoArgumentConstructorDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // register state
    // x1: function
    // x2: allocation site with elements kind
    // x0: number of arguments to the constructor function
    Register registers[] = {x1, x2, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
  }
  
  void ArrayConstructorConstantArgCountDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x1: function
    // x2: allocation site with elements kind
    // x0: number of arguments to the constructor function
    Register registers[] = {x1, x2};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void ArrayConstructorDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // stack param count needs (constructor pointer, and single argument)
    Register registers[] = {x1, x2, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void InternalArrayConstructorConstantArgCountDescriptor::
      InitializePlatformSpecific(CallInterfaceDescriptorData* data) {
    // x1: constructor function
    // x0: number of arguments to the constructor function
    Register registers[] = {x1};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void InternalArrayConstructorDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // stack param count needs (constructor pointer, and single argument)
    Register registers[] = {x1, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  void FastArrayPushDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // stack param count needs (arg count)
    Register registers[] = {x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  void CompareDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x1: left operand
    // x0: right operand
    Register registers[] = {x1, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void BinaryOpDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x1: left operand
    // x0: right operand
    Register registers[] = {x1, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void BinaryOpWithAllocationSiteDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x2: allocation site
    // x1: left operand
    // x0: right operand
    Register registers[] = {x2, x1, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  void CountOpDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    Register registers[] = {x1};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  void StringAddDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    // x1: left operand
    // x0: right operand
    Register registers[] = {x1, x0};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  
  void KeyedDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    static PlatformInterfaceDescriptor noInlineDescriptor =
        PlatformInterfaceDescriptor(NEVER_INLINE_TARGET_ADDRESS);
  
    Register registers[] = {
        x2,  // key
    };
    data->InitializePlatformSpecific(arraysize(registers), registers,
                                     &noInlineDescriptor);
  }
  
  
  void NamedDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    static PlatformInterfaceDescriptor noInlineDescriptor =
        PlatformInterfaceDescriptor(NEVER_INLINE_TARGET_ADDRESS);
  
    Register registers[] = {
        x2,  // name
    };
    data->InitializePlatformSpecific(arraysize(registers), registers,
                                     &noInlineDescriptor);
  }
  
  
  void CallHandlerDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    static PlatformInterfaceDescriptor default_descriptor =
        PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
  
    Register registers[] = {
        x0,  // receiver
    };
    data->InitializePlatformSpecific(arraysize(registers), registers,
                                     &default_descriptor);
  }
  
  
  void ArgumentAdaptorDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    static PlatformInterfaceDescriptor default_descriptor =
        PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
  
    Register registers[] = {
        x1,  // JSFunction
        x3,  // the new target
        x0,  // actual number of arguments
        x2,  // expected number of arguments
    };
    data->InitializePlatformSpecific(arraysize(registers), registers,
                                     &default_descriptor);
  }
  
  void ApiCallbackDescriptorBase::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    static PlatformInterfaceDescriptor default_descriptor =
        PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
  
    Register registers[] = {
        x0,  // callee
        x4,  // call_data
        x2,  // holder
        x1,  // api_function_address
    };
    data->InitializePlatformSpecific(arraysize(registers), registers,
                                     &default_descriptor);
  }
  
  void InterpreterDispatchDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    Register registers[] = {
        kInterpreterAccumulatorRegister, kInterpreterBytecodeOffsetRegister,
        kInterpreterBytecodeArrayRegister, kInterpreterDispatchTableRegister};
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  void InterpreterPushArgsAndCallDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    Register registers[] = {
        x0,  // argument count (not including receiver)
        x2,  // address of first argument
        x1   // the target callable to be call
    };
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  void InterpreterPushArgsAndConstructDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    Register registers[] = {
        x0,  // argument count (not including receiver)
        x3,  // new target
        x1,  // constructor to call
        x2   // address of the first argument
    };
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  void InterpreterCEntryDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    Register registers[] = {
        x0,   // argument count (argc)
        x11,  // address of first argument (argv)
        x1    // the runtime function to call
    };
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  void ResumeGeneratorDescriptor::InitializePlatformSpecific(
      CallInterfaceDescriptorData* data) {
    Register registers[] = {
        x0,  // the value to pass to the generator
        x1,  // the JSGeneratorObject to resume
        x2   // the resume mode (tagged)
    };
    data->InitializePlatformSpecific(arraysize(registers), registers);
  }
  
  }  // namespace internal
  }  // namespace v8
  
  #endif  // V8_TARGET_ARCH_ARM64
  