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// 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/codegen/interface-descriptors.h"
#include "src/execution/frames.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);
}
void RecordWriteDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
const Register default_stub_registers[] = {arg_reg_1, arg_reg_2, arg_reg_3,
arg_reg_4, kReturnRegister0};
data->RestrictAllocatableRegisters(default_stub_registers,
arraysize(default_stub_registers));
CHECK_LE(static_cast<size_t>(kParameterCount),
arraysize(default_stub_registers));
data->InitializePlatformSpecific(kParameterCount, default_stub_registers);
}
void EphemeronKeyBarrierDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
const Register default_stub_registers[] = {arg_reg_1, arg_reg_2, arg_reg_3,
arg_reg_4, kReturnRegister0};
data->RestrictAllocatableRegisters(default_stub_registers,
arraysize(default_stub_registers));
CHECK_LE(static_cast<size_t>(kParameterCount),
arraysize(default_stub_registers));
data->InitializePlatformSpecific(kParameterCount, default_stub_registers);
}
const Register FastNewFunctionContextDescriptor::ScopeInfoRegister() {
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 StoreTransitionDescriptor::SlotRegister() { return rdi; }
const Register StoreTransitionDescriptor::VectorRegister() { return rbx; }
const Register StoreTransitionDescriptor::MapRegister() { return r11; }
const Register ApiGetterDescriptor::HolderRegister() { return rcx; }
const Register ApiGetterDescriptor::CallbackRegister() { return rbx; }
const Register GrowArrayElementsDescriptor::ObjectRegister() { return rax; }
const Register GrowArrayElementsDescriptor::KeyRegister() { return rbx; }
void TypeofDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {rbx};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
// static
const Register TypeConversionDescriptor::ArgumentRegister() { return rax; }
void CallTrampolineDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// rax : number of arguments
// rdi : the target to call
Register registers[] = {rdi, rax};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallVarargsDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// rax : number of arguments (on the stack, not including receiver)
// rdi : the target to call
// rcx : arguments list length (untagged)
// rbx : arguments list (FixedArray)
Register registers[] = {rdi, rax, rcx, rbx};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallForwardVarargsDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// rax : number of arguments
// rcx : start index (to support rest parameters)
// rdi : the target to call
Register registers[] = {rdi, rax, rcx};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallFunctionTemplateDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// rdx: the function template info
// rcx: number of arguments (on the stack, not including receiver)
Register registers[] = {rdx, rcx};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallWithSpreadDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// rax : number of arguments (on the stack, not including receiver)
// rdi : the target to call
// rbx : the object to spread
Register registers[] = {rdi, rax, rbx};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallWithArrayLikeDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// rdi : the target to call
// rbx : the arguments list
Register registers[] = {rdi, rbx};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ConstructVarargsDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// rax : number of arguments (on the stack, not including receiver)
// rdi : the target to call
// rdx : the new target
// rcx : arguments list length (untagged)
// rbx : arguments list (FixedArray)
Register registers[] = {rdi, rdx, rax, rcx, rbx};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ConstructForwardVarargsDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// rax : number of arguments
// rdx : the new target
// rcx : start index (to support rest parameters)
// rdi : the target to call
Register registers[] = {rdi, rdx, rax, rcx};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ConstructWithSpreadDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// rax : number of arguments (on the stack, not including receiver)
// rdi : the target to call
// rdx : the new target
// rbx : the object to spread
Register registers[] = {rdi, rdx, rax, rbx};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ConstructWithArrayLikeDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// rdi : the target to call
// rdx : the new target
// rbx : the arguments list
Register registers[] = {rdi, rdx, rbx};
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 AbortDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {rdx};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void AllocateHeapNumberDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
data->InitializePlatformSpecific(0, nullptr);
}
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 ArgumentsAdaptorDescriptor::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 ApiCallbackDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {
rdx, // api function address
rcx, // argument count (not including receiver)
rbx, // call data
rdi, // holder
};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void InterpreterDispatchDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {
kInterpreterAccumulatorRegister, kInterpreterBytecodeOffsetRegister,
kInterpreterBytecodeArrayRegister, kInterpreterDispatchTableRegister};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void InterpreterPushArgsThenCallDescriptor::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 InterpreterPushArgsThenConstructDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {
rax, // argument count (not including receiver)
rcx, // address of first argument
rdi, // constructor to call
rdx, // new target
rbx, // allocation site feedback if available, undefined otherwise
};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ResumeGeneratorDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {
rax, // the value to pass to the generator
rdx // the JSGeneratorObject / JSAsyncGeneratorObject to resume
};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void FrameDropperTrampolineDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {
rbx, // loaded new FP
};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void RunMicrotasksEntryDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {arg_reg_1, arg_reg_2};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
} // namespace internal
} // namespace v8
#endif // V8_TARGET_ARCH_X64