Server : Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.4.20 System : Linux st2.domain.com 3.10.0-1127.10.1.el7.x86_64 #1 SMP Wed Jun 3 14:28:03 UTC 2020 x86_64 User : apache ( 48) PHP Version : 7.4.20 Disable Function : NONE Directory : /home/real/node-v13.0.1/deps/v8/src/codegen/mips64/ |
// 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_MIPS64
#include "src/codegen/interface-descriptors.h"
#include "src/execution/frames.h"
namespace v8 {
namespace internal {
const Register CallInterfaceDescriptor::ContextRegister() { return cp; }
void CallInterfaceDescriptor::DefaultInitializePlatformSpecific(
CallInterfaceDescriptorData* data, int register_parameter_count) {
const Register default_stub_registers[] = {a0, a1, a2, a3, a4};
CHECK_LE(static_cast<size_t>(register_parameter_count),
arraysize(default_stub_registers));
data->InitializePlatformSpecific(register_parameter_count,
default_stub_registers);
}
// On MIPS it is not allowed to use odd numbered floating point registers
// (e.g. f1, f3, etc.) for parameters. This can happen if we use
// DefaultInitializePlatformSpecific to assign float registers for parameters.
// E.g if fourth parameter goes to float register, f7 would be assigned for
// parameter (a3 casted to int is 7).
bool CallInterfaceDescriptor::IsValidFloatParameterRegister(Register reg) {
return reg.code() % 2 == 0;
}
void WasmI32AtomicWaitDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
/* Register t0 correspond to f12 FPU register. */
const Register default_stub_registers[] = {a0, a1, t0};
CHECK_EQ(static_cast<size_t>(kParameterCount),
arraysize(default_stub_registers));
data->InitializePlatformSpecific(kParameterCount, default_stub_registers);
}
void WasmI64AtomicWaitDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
/* Register t0 correspond to f12 FPU register. */
const Register default_stub_registers[] = {a0, a1, a2, t0};
CHECK_EQ(static_cast<size_t>(kParameterCount),
arraysize(default_stub_registers));
data->InitializePlatformSpecific(kParameterCount, default_stub_registers);
}
void RecordWriteDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
const Register default_stub_registers[] = {a0, a1, a2, a3, 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[] = {a0, a1, a2, a3, 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 a1;
}
const Register FastNewFunctionContextDescriptor::SlotsRegister() { return a0; }
const Register LoadDescriptor::ReceiverRegister() { return a1; }
const Register LoadDescriptor::NameRegister() { return a2; }
const Register LoadDescriptor::SlotRegister() { return a0; }
const Register LoadWithVectorDescriptor::VectorRegister() { return a3; }
const Register StoreDescriptor::ReceiverRegister() { return a1; }
const Register StoreDescriptor::NameRegister() { return a2; }
const Register StoreDescriptor::ValueRegister() { return a0; }
const Register StoreDescriptor::SlotRegister() { return a4; }
const Register StoreWithVectorDescriptor::VectorRegister() { return a3; }
const Register StoreTransitionDescriptor::SlotRegister() { return a4; }
const Register StoreTransitionDescriptor::VectorRegister() { return a3; }
const Register StoreTransitionDescriptor::MapRegister() { return a5; }
const Register ApiGetterDescriptor::HolderRegister() { return a0; }
const Register ApiGetterDescriptor::CallbackRegister() { return a3; }
const Register GrowArrayElementsDescriptor::ObjectRegister() { return a0; }
const Register GrowArrayElementsDescriptor::KeyRegister() { return a3; }
// static
const Register TypeConversionDescriptor::ArgumentRegister() { return a0; }
void TypeofDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {a3};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallTrampolineDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a1: target
// a0: number of arguments
Register registers[] = {a1, a0};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallVarargsDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a0 : number of arguments (on the stack, not including receiver)
// a1 : the target to call
// a4 : arguments list length (untagged)
// a2 : arguments list (FixedArray)
Register registers[] = {a1, a0, a4, a2};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallForwardVarargsDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a1: the target to call
// a0: number of arguments
// a2: start index (to support rest parameters)
Register registers[] = {a1, a0, a2};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallFunctionTemplateDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a1 : function template info
// a0 : number of arguments (on the stack, not including receiver)
Register registers[] = {a1, a0};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallWithSpreadDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a0 : number of arguments (on the stack, not including receiver)
// a1 : the target to call
// a2 : the object to spread
Register registers[] = {a1, a0, a2};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void CallWithArrayLikeDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a1 : the target to call
// a2 : the arguments list
Register registers[] = {a1, a2};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ConstructVarargsDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a0 : number of arguments (on the stack, not including receiver)
// a1 : the target to call
// a3 : the new target
// a4 : arguments list length (untagged)
// a2 : arguments list (FixedArray)
Register registers[] = {a1, a3, a0, a4, a2};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ConstructForwardVarargsDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a1: the target to call
// a3: new target
// a0: number of arguments
// a2: start index (to support rest parameters)
Register registers[] = {a1, a3, a0, a2};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ConstructWithSpreadDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a0 : number of arguments (on the stack, not including receiver)
// a1 : the target to call
// a3 : the new target
// a2 : the object to spread
Register registers[] = {a1, a3, a0, a2};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ConstructWithArrayLikeDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a1 : the target to call
// a3 : the new target
// a2 : the arguments list
Register registers[] = {a1, a3, a2};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ConstructStubDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// a1: target
// a3: new target
// a0: number of arguments
// a2: allocation site or undefined
Register registers[] = {a1, a3, a0, a2};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void AbortDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {a0};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void AllocateHeapNumberDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
// register state
data->InitializePlatformSpecific(0, nullptr);
}
void CompareDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {a1, a0};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void BinaryOpDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {a1, a0};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ArgumentsAdaptorDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {
a1, // JSFunction
a3, // the new target
a0, // actual number of arguments
a2, // expected number of arguments
};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ApiCallbackDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {
a1, // kApiFunctionAddress
a2, // kArgc
a3, // kCallData
a0, // kHolder
};
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[] = {
a0, // argument count (not including receiver)
a2, // address of first argument
a1 // the target callable to be call
};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void InterpreterPushArgsThenConstructDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {
a0, // argument count (not including receiver)
a4, // address of the first argument
a1, // constructor to call
a3, // new target
a2, // allocation site feedback if available, undefined otherwise
};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void ResumeGeneratorDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {
v0, // the value to pass to the generator
a1 // the JSGeneratorObject to resume
};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void FrameDropperTrampolineDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {
a1, // loaded new FP
};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
void RunMicrotasksEntryDescriptor::InitializePlatformSpecific(
CallInterfaceDescriptorData* data) {
Register registers[] = {a0, a1};
data->InitializePlatformSpecific(arraysize(registers), registers);
}
} // namespace internal
} // namespace v8
#endif // V8_TARGET_ARCH_MIPS64