src/x64/interface-descriptors-x64.cc - v8/v8 - Git at Google

 // 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.

 #if V8_TARGET_ARCH_X64

 #include "src/interface-descriptors.h"

 namespace v8 {
 namespace internal {

 const Register CallInterfaceDescriptor::ContextRegister() { return rsi; }

 void CallInterfaceDescriptor::DefaultInitializePlatformSpecific(
     CallInterfaceDescriptorData* data, int register_parameter_count) {
   const Register default_stub_registers[] = {rax, rbx, rcx, rdx, rdi};
   CHECK_LE(static_cast<size_t>(register_parameter_count),
            arraysize(default_stub_registers));
   data->InitializePlatformSpecific(register_parameter_count,
                                    default_stub_registers);
 }

 const Register FastNewFunctionContextDescriptor::FunctionRegister() {
   return rdi;
 }
 const Register FastNewFunctionContextDescriptor::SlotsRegister() { return rax; }

 const Register LoadDescriptor::ReceiverRegister() { return rdx; }
 const Register LoadDescriptor::NameRegister() { return rcx; }
 const Register LoadDescriptor::SlotRegister() { return rax; }


 const Register LoadWithVectorDescriptor::VectorRegister() { return rbx; }


 const Register StoreDescriptor::ReceiverRegister() { return rdx; }
 const Register StoreDescriptor::NameRegister() { return rcx; }
 const Register StoreDescriptor::ValueRegister() { return rax; }
 const Register StoreDescriptor::SlotRegister() { return rdi; }

 const Register StoreWithVectorDescriptor::VectorRegister() { return rbx; }

 const Register VectorStoreTransitionDescriptor::SlotRegister() { return rdi; }
 const Register VectorStoreTransitionDescriptor::VectorRegister() { return rbx; }
 const Register VectorStoreTransitionDescriptor::MapRegister() { return r11; }


 const Register StoreTransitionDescriptor::MapRegister() { return rbx; }


 const Register StoreGlobalViaContextDescriptor::SlotRegister() { return rbx; }
 const Register StoreGlobalViaContextDescriptor::ValueRegister() { return rax; }


 const Register StringCompareDescriptor::LeftRegister() { return rdx; }
 const Register StringCompareDescriptor::RightRegister() { return rax; }

 const Register ApiGetterDescriptor::HolderRegister() { return rcx; }
 const Register ApiGetterDescriptor::CallbackRegister() { return rbx; }

 const Register MathPowTaggedDescriptor::exponent() { return rdx; }


 const Register MathPowIntegerDescriptor::exponent() {
   return MathPowTaggedDescriptor::exponent();
 }


 const Register GrowArrayElementsDescriptor::ObjectRegister() { return rax; }
 const Register GrowArrayElementsDescriptor::KeyRegister() { return rbx; }


 void FastNewClosureDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rbx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void FastNewObjectDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdi, rdx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void FastNewRestParameterDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdi};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void FastNewSloppyArgumentsDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdi};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void FastNewStrictArgumentsDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdi};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void TypeofDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rbx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 // static
 const Register TypeConversionDescriptor::ArgumentRegister() { return rax; }

 void FastCloneRegExpDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdi, rax, rcx, rdx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void FastCloneShallowArrayDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rax, rbx, rcx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void FastCloneShallowObjectDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rax, rbx, rcx, rdx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void CreateAllocationSiteDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rbx, rdx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void CreateWeakCellDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rbx, rdx, rdi};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void CallFunctionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdi};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void CallFunctionWithFeedbackDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdi, rdx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void CallFunctionWithFeedbackAndVectorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdi, rdx, rbx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void CallConstructDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // rax : number of arguments
   // rbx : feedback vector
   // rdx : slot in feedback vector (Smi, for RecordCallTarget)
   // rdi : constructor function
   // 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[] = {rax, rdi, rbx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void CallTrampolineDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // rax : number of arguments
   // rdi : the target to call
   Register registers[] = {rdi, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void ConstructStubDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // rax : number of arguments
   // rdx : the new target
   // rdi : the target to call
   // rbx : allocation site or undefined
   Register registers[] = {rdi, rdx, rax, rbx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void ConstructTrampolineDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // rax : number of arguments
   // rdx : the new target
   // rdi : the target to call
   Register registers[] = {rdi, rdx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void RegExpConstructResultDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rcx, rbx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void TransitionElementsKindDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rax, rbx};
   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
   // rax -- number of arguments
   // rdi -- function
   // rbx -- allocation site with elements kind
   Register registers[] = {rdi, rbx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }

 void ArraySingleArgumentConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // register state
   // rax -- number of arguments
   // rdi -- function
   // rbx -- allocation site with elements kind
   Register registers[] = {rdi, rbx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }

 void ArrayNArgumentsConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // register state
   // rax -- number of arguments
   // rdi -- function
   // rbx -- allocation site with elements kind
   Register registers[] = {rdi, rbx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }

 void VarArgFunctionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // stack param count needs (arg count)
   Register registers[] = {rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void CompareDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void BinaryOpDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void BinaryOpWithAllocationSiteDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rcx, rdx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void CountOpDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void StringAddDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void KeyedDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rcx,  // key
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void NamedDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rcx,  // name
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void CallHandlerDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rdx,  // receiver
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }


 void ArgumentAdaptorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rdi,  // JSFunction
       rdx,  // the new target
       rax,  // actual number of arguments
       rbx,  // expected number of arguments
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void ApiCallbackDescriptorBase::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rdi,  // callee
       rbx,  // call_data
       rcx,  // holder
       rdx,  // api_function_address
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void InterpreterDispatchDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       kInterpreterAccumulatorRegister, kInterpreterBytecodeOffsetRegister,
       kInterpreterBytecodeArrayRegister, kInterpreterDispatchTableRegister};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void InterpreterPushArgsAndCallDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rax,  // argument count (not including receiver)
       rbx,  // address of first argument
       rdi   // the target callable to be call
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void InterpreterPushArgsAndConstructDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rax,  // argument count (not including receiver)
       rdx,  // new target
       rdi,  // constructor
       rbx,  // allocation site feedback if available, undefined otherwise
       rcx,  // address of first argument
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void InterpreterCEntryDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rax,  // argument count (argc)
       r15,  // address of first argument (argv)
       rbx   // the runtime function to call
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 void ResumeGeneratorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rax,  // the value to pass to the generator
       rbx,  // the JSGeneratorObject to resume
       rdx   // the resume mode (tagged)
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }

 }  // namespace internal
 }  // namespace v8

 #endif  // V8_TARGET_ARCH_X64
	// 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.

	#if V8_TARGET_ARCH_X64

	#include "src/interface-descriptors.h"

	namespace v8 {
	namespace internal {

	const Register CallInterfaceDescriptor::ContextRegister() { return rsi; }

	void CallInterfaceDescriptor::DefaultInitializePlatformSpecific(
	CallInterfaceDescriptorData* data, int register_parameter_count) {
	const Register default_stub_registers[] = {rax, rbx, rcx, rdx, rdi};
	CHECK_LE(static_cast<size_t>(register_parameter_count),
	arraysize(default_stub_registers));
	data->InitializePlatformSpecific(register_parameter_count,
	default_stub_registers);
	}

	const Register FastNewFunctionContextDescriptor::FunctionRegister() {
	return rdi;
	}
	const Register FastNewFunctionContextDescriptor::SlotsRegister() { return rax; }

	const Register LoadDescriptor::ReceiverRegister() { return rdx; }
	const Register LoadDescriptor::NameRegister() { return rcx; }
	const Register LoadDescriptor::SlotRegister() { return rax; }


	const Register LoadWithVectorDescriptor::VectorRegister() { return rbx; }


	const Register StoreDescriptor::ReceiverRegister() { return rdx; }
	const Register StoreDescriptor::NameRegister() { return rcx; }
	const Register StoreDescriptor::ValueRegister() { return rax; }
	const Register StoreDescriptor::SlotRegister() { return rdi; }

	const Register StoreWithVectorDescriptor::VectorRegister() { return rbx; }

	const Register VectorStoreTransitionDescriptor::SlotRegister() { return rdi; }
	const Register VectorStoreTransitionDescriptor::VectorRegister() { return rbx; }
	const Register VectorStoreTransitionDescriptor::MapRegister() { return r11; }


	const Register StoreTransitionDescriptor::MapRegister() { return rbx; }


	const Register StoreGlobalViaContextDescriptor::SlotRegister() { return rbx; }
	const Register StoreGlobalViaContextDescriptor::ValueRegister() { return rax; }


	const Register StringCompareDescriptor::LeftRegister() { return rdx; }
	const Register StringCompareDescriptor::RightRegister() { return rax; }

	const Register ApiGetterDescriptor::HolderRegister() { return rcx; }
	const Register ApiGetterDescriptor::CallbackRegister() { return rbx; }

	const Register MathPowTaggedDescriptor::exponent() { return rdx; }


	const Register MathPowIntegerDescriptor::exponent() {
	return MathPowTaggedDescriptor::exponent();
	}


	const Register GrowArrayElementsDescriptor::ObjectRegister() { return rax; }
	const Register GrowArrayElementsDescriptor::KeyRegister() { return rbx; }


	void FastNewClosureDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rbx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void FastNewObjectDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdi, rdx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void FastNewRestParameterDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdi};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void FastNewSloppyArgumentsDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdi};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void FastNewStrictArgumentsDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdi};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void TypeofDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rbx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	// static
	const Register TypeConversionDescriptor::ArgumentRegister() { return rax; }

	void FastCloneRegExpDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdi, rax, rcx, rdx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void FastCloneShallowArrayDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rax, rbx, rcx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void FastCloneShallowObjectDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rax, rbx, rcx, rdx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void CreateAllocationSiteDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rbx, rdx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void CreateWeakCellDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rbx, rdx, rdi};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void CallFunctionDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdi};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void CallFunctionWithFeedbackDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdi, rdx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void CallFunctionWithFeedbackAndVectorDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdi, rdx, rbx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void CallConstructDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	// rax : number of arguments
	// rbx : feedback vector
	// rdx : slot in feedback vector (Smi, for RecordCallTarget)
	// rdi : constructor function
	// 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[] = {rax, rdi, rbx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void CallTrampolineDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	// rax : number of arguments
	// rdi : the target to call
	Register registers[] = {rdi, rax};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void ConstructStubDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	// rax : number of arguments
	// rdx : the new target
	// rdi : the target to call
	// rbx : allocation site or undefined
	Register registers[] = {rdi, rdx, rax, rbx};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void ConstructTrampolineDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	// rax : number of arguments
	// rdx : the new target
	// rdi : the target to call
	Register registers[] = {rdi, rdx, rax};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void RegExpConstructResultDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rcx, rbx, rax};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void TransitionElementsKindDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rax, rbx};
	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
	// rax -- number of arguments
	// rdi -- function
	// rbx -- allocation site with elements kind
	Register registers[] = {rdi, rbx, rax};
	data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
	}

	void ArraySingleArgumentConstructorDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	// register state
	// rax -- number of arguments
	// rdi -- function
	// rbx -- allocation site with elements kind
	Register registers[] = {rdi, rbx, rax};
	data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
	}

	void ArrayNArgumentsConstructorDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	// register state
	// rax -- number of arguments
	// rdi -- function
	// rbx -- allocation site with elements kind
	Register registers[] = {rdi, rbx, rax};
	data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
	}

	void VarArgFunctionDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	// stack param count needs (arg count)
	Register registers[] = {rax};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void CompareDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdx, rax};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void BinaryOpDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdx, rax};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void BinaryOpWithAllocationSiteDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rcx, rdx, rax};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void CountOpDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rax};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void StringAddDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {rdx, rax};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void KeyedDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {
	rcx, // key
	};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void NamedDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {
	rcx, // name
	};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void CallHandlerDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {
	rdx, // receiver
	};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}


	void ArgumentAdaptorDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {
	rdi, // JSFunction
	rdx, // the new target
	rax, // actual number of arguments
	rbx, // expected number of arguments
	};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void ApiCallbackDescriptorBase::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {
	rdi, // callee
	rbx, // call_data
	rcx, // holder
	rdx, // api_function_address
	};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void InterpreterDispatchDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {
	kInterpreterAccumulatorRegister, kInterpreterBytecodeOffsetRegister,
	kInterpreterBytecodeArrayRegister, kInterpreterDispatchTableRegister};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void InterpreterPushArgsAndCallDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {
	rax, // argument count (not including receiver)
	rbx, // address of first argument
	rdi // the target callable to be call
	};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void InterpreterPushArgsAndConstructDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {
	rax, // argument count (not including receiver)
	rdx, // new target
	rdi, // constructor
	rbx, // allocation site feedback if available, undefined otherwise
	rcx, // address of first argument
	};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void InterpreterCEntryDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {
	rax, // argument count (argc)
	r15, // address of first argument (argv)
	rbx // the runtime function to call
	};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	void ResumeGeneratorDescriptor::InitializePlatformSpecific(
	CallInterfaceDescriptorData* data) {
	Register registers[] = {
	rax, // the value to pass to the generator
	rbx, // the JSGeneratorObject to resume
	rdx // the resume mode (tagged)
	};
	data->InitializePlatformSpecific(arraysize(registers), registers);
	}

	} // namespace internal
	} // namespace v8

	#endif // V8_TARGET_ARCH_X64