Make concrete classes for individual call descriptors.

src/arm64/interface-descriptors-arm64.cc

 // 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/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/interface-descriptors.h"
 
 namespace v8 {
 namespace internal {
 
 const Register CallInterfaceDescriptor::ContextRegister() { return cp; }
 
 
-void CallDescriptors::InitializeForIsolate(Isolate* isolate) {
-  static PlatformInterfaceDescriptor default_descriptor =
-      PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
-
+const Register LoadDescriptor::ReceiverRegister() { return x1; }
+const Register LoadDescriptor::NameRegister() { return x2; }
+
+
+const Register VectorLoadICDescriptor::ReceiverRegister() {
+  return LoadDescriptor::ReceiverRegister();
+}
+
+
+const Register VectorLoadICDescriptor::NameRegister() {
+  return LoadDescriptor::NameRegister();
+}
+
+
+const Register VectorLoadICDescriptor::SlotRegister() { return x0; }
+const Register VectorLoadICDescriptor::VectorRegister() { return x3; }
+
+
+const Register StoreDescriptor::ReceiverRegister() { return x1; }
+const Register StoreDescriptor::NameRegister() { return x2; }
+const Register StoreDescriptor::ValueRegister() { return x0; }
+
+
+const Register ElementTransitionAndStoreDescriptor::ReceiverRegister() {
+  return StoreDescriptor::ReceiverRegister();
+}
+
+
+const Register ElementTransitionAndStoreDescriptor::NameRegister() {
+  return StoreDescriptor::NameRegister();
+}
+
+
+const Register ElementTransitionAndStoreDescriptor::ValueRegister() {
+  return StoreDescriptor::ValueRegister();
+}
+
+
+const Register ElementTransitionAndStoreDescriptor::MapRegister() { return x3; }
+
+
+const Register InstanceofDescriptor::left() {
+  // Object to check (instanceof lhs).
+  return x11;
+}
+
+
+const Register InstanceofDescriptor::right() {
+  // Constructor function (instanceof rhs).
+  return x10;
+}
+
+
+void FastNewClosureDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x2: function info
+  Register registers[] = {cp, x2};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void FastNewContextDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x1: function
+  Register registers[] = {cp, x1};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void ToNumberDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x0: value
+  Register registers[] = {cp, x0};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void NumberToStringDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x0: value
+  Register registers[] = {cp, x0};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void FastCloneShallowArrayDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x3: array literals array
+  // x2: array literal index
+  // x1: constant elements
+  Register registers[] = {cp, x3, x2, x1};
+  Representation representations[] = {
+      Representation::Tagged(), Representation::Tagged(), Representation::Smi(),
+      Representation::Tagged()};
+  InitializeData(isolate, key(), arraysize(registers), registers,
+                 representations);
+}
+
+
+void FastCloneShallowObjectDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x3: object literals array
+  // x2: object literal index
+  // x1: constant properties
+  // x0: object literal flags
+  Register registers[] = {cp, x3, x2, x1, x0};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void CreateAllocationSiteDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x2: feedback vector
+  // x3: call feedback slot
+  Register registers[] = {cp, x2, x3};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void CallFunctionDescriptor::Initialize(Isolate* isolate) {
+  // x1  function    the function to call
+  Register registers[] = {cp, x1};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void CallConstructDescriptor::Initialize(Isolate* isolate) {
+  // x0 : number of arguments
+  // x1 : the function to call
+  // x2 : feedback vector
+  // x3 : slot in feedback vector (smi) (if r2 is not the megamorphic symbol)
+  // 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[] = {cp, x0, x1, x2};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void RegExpConstructResultDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x2: length
+  // x1: index (of last match)
+  // x0: string
+  Register registers[] = {cp, x2, x1, x0};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void TransitionElementsKindDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x0: value (js_array)
+  // x1: to_map
+  Register registers[] = {cp, x0, x1};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void ArrayConstructorConstantArgCountDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x1: function
+  // x2: allocation site with elements kind
+  // x0: number of arguments to the constructor function
+  Register registers[] = {cp, x1, x2};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void ArrayConstructorDescriptor::Initialize(Isolate* isolate) {
+  // stack param count needs (constructor pointer, and single argument)
+  Register registers[] = {cp, x1, x2, x0};
+  Representation representations[] = {
+      Representation::Tagged(), Representation::Tagged(),
+      Representation::Tagged(), Representation::Integer32()};
+  InitializeData(isolate, key(), arraysize(registers), registers,
+                 representations);
+}
+
+
+void InternalArrayConstructorConstantArgCountDescriptor::Initialize(
+    Isolate* isolate) {
+  // cp: context
+  // x1: constructor function
+  // x0: number of arguments to the constructor function
+  Register registers[] = {cp, x1};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void InternalArrayConstructorDescriptor::Initialize(Isolate* isolate) {
+  // stack param count needs (constructor pointer, and single argument)
+  Register registers[] = {cp, x1, x0};
+  Representation representations[] = {Representation::Tagged(),
+                                      Representation::Tagged(),
+                                      Representation::Integer32()};
+  InitializeData(isolate, key(), arraysize(registers), registers,
+                 representations);
+}
+
+
+void CompareNilDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x0: value to compare
+  Register registers[] = {cp, x0};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void ToBooleanDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x0: value
+  Register registers[] = {cp, x0};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void BinaryOpDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x1: left operand
+  // x0: right operand
+  Register registers[] = {cp, x1, x0};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void BinaryOpWithAllocationSiteDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x2: allocation site
+  // x1: left operand
+  // x0: right operand
+  Register registers[] = {cp, x2, x1, x0};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void StringAddDescriptor::Initialize(Isolate* isolate) {
+  // cp: context
+  // x1: left operand
+  // x0: right operand
+  Register registers[] = {cp, x1, x0};
+  InitializeData(isolate, key(), arraysize(registers), registers, NULL);
+}
+
+
+void KeyedDescriptor::Initialize(Isolate* isolate) {
   static PlatformInterfaceDescriptor noInlineDescriptor =
       PlatformInterfaceDescriptor(NEVER_INLINE_TARGET_ADDRESS);
 
-  InitializeForIsolateAllPlatforms(isolate);
-
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::FastNewClosureCall);
-    // cp: context
-    // x2: function info
-    Register registers[] = {cp, x2};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::FastNewContextCall);
-    // cp: context
-    // x1: function
-    Register registers[] = {cp, x1};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::ToNumberCall);
-    // cp: context
-    // x0: value
-    Register registers[] = {cp, x0};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::NumberToStringCall);
-    // cp: context
-    // x0: value
-    Register registers[] = {cp, x0};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::FastCloneShallowArrayCall);
-    // cp: context
-    // x3: array literals array
-    // x2: array literal index
-    // x1: constant elements
-    Register registers[] = {cp, x3, x2, x1};
-    Representation representations[] = {
-        Representation::Tagged(), Representation::Tagged(),
-        Representation::Smi(), Representation::Tagged()};
-    descriptor->Initialize(arraysize(registers), registers, representations);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::FastCloneShallowObjectCall);
-    // cp: context
-    // x3: object literals array
-    // x2: object literal index
-    // x1: constant properties
-    // x0: object literal flags
-    Register registers[] = {cp, x3, x2, x1, x0};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::CreateAllocationSiteCall);
-    // cp: context
-    // x2: feedback vector
-    // x3: call feedback slot
-    Register registers[] = {cp, x2, x3};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::CallFunctionCall);
-    // x1  function    the function to call
-    Register registers[] = {cp, x1};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::CallConstructCall);
-    // x0 : number of arguments
-    // x1 : the function to call
-    // x2 : feedback vector
-    // x3 : slot in feedback vector (smi) (if r2 is not the megamorphic symbol)
-    // 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[] = {cp, x0, x1, x2};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::RegExpConstructResultCall);
-    // cp: context
-    // x2: length
-    // x1: index (of last match)
-    // x0: string
-    Register registers[] = {cp, x2, x1, x0};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::TransitionElementsKindCall);
-    // cp: context
-    // x0: value (js_array)
-    // x1: to_map
-    Register registers[] = {cp, x0, x1};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor = isolate->call_descriptor(
-        CallDescriptorKey::ArrayConstructorConstantArgCountCall);
-    // cp: context
-    // x1: function
-    // x2: allocation site with elements kind
-    // x0: number of arguments to the constructor function
-    Register registers[] = {cp, x1, x2};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::ArrayConstructorCall);
-    // stack param count needs (constructor pointer, and single argument)
-    Register registers[] = {cp, x1, x2, x0};
-    Representation representations[] = {
-        Representation::Tagged(), Representation::Tagged(),
-        Representation::Tagged(), Representation::Integer32()};
-    descriptor->Initialize(arraysize(registers), registers, representations);
-  }
-  {
-    CallInterfaceDescriptor* descriptor = isolate->call_descriptor(
-        CallDescriptorKey::InternalArrayConstructorConstantArgCountCall);
-    // cp: context
-    // x1: constructor function
-    // x0: number of arguments to the constructor function
-    Register registers[] = {cp, x1};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor = isolate->call_descriptor(
-        CallDescriptorKey::InternalArrayConstructorCall);
-    // stack param count needs (constructor pointer, and single argument)
-    Register registers[] = {cp, x1, x0};
-    Representation representations[] = {Representation::Tagged(),
-                                        Representation::Tagged(),
-                                        Representation::Integer32()};
-    descriptor->Initialize(arraysize(registers), registers, representations);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::CompareNilCall);
-    // cp: context
-    // x0: value to compare
-    Register registers[] = {cp, x0};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::ToBooleanCall);
-    // cp: context
-    // x0: value
-    Register registers[] = {cp, x0};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::BinaryOpCall);
-    // cp: context
-    // x1: left operand
-    // x0: right operand
-    Register registers[] = {cp, x1, x0};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor = isolate->call_descriptor(
-        CallDescriptorKey::BinaryOpWithAllocationSiteCall);
-    // cp: context
-    // x2: allocation site
-    // x1: left operand
-    // x0: right operand
-    Register registers[] = {cp, x2, x1, x0};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::StringAddCall);
-    // cp: context
-    // x1: left operand
-    // x0: right operand
-    Register registers[] = {cp, x1, x0};
-    descriptor->Initialize(arraysize(registers), registers, NULL);
-  }
-
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::ArgumentAdaptorCall);
-    Register registers[] = {
-        cp,  // context
-        x1,  // JSFunction
-        x0,  // actual number of arguments
-        x2,  // expected number of arguments
-    };
-    Representation representations[] = {
-        Representation::Tagged(),     // context
-        Representation::Tagged(),     // JSFunction
-        Representation::Integer32(),  // actual number of arguments
-        Representation::Integer32(),  // expected number of arguments
-    };
-    descriptor->Initialize(arraysize(registers), registers, representations,
-                           &default_descriptor);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::KeyedCall);
-    Register registers[] = {
-        cp,  // context
-        x2,  // key
-    };
-    Representation representations[] = {
-        Representation::Tagged(),  // context
-        Representation::Tagged(),  // key
-    };
-    descriptor->Initialize(arraysize(registers), registers, representations,
-                           &noInlineDescriptor);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::NamedCall);
-    Register registers[] = {
-        cp,  // context
-        x2,  // name
-    };
-    Representation representations[] = {
-        Representation::Tagged(),  // context
-        Representation::Tagged(),  // name
-    };
-    descriptor->Initialize(arraysize(registers), registers, representations,
-                           &noInlineDescriptor);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::CallHandler);
-    Register registers[] = {
-        cp,  // context
-        x0,  // receiver
-    };
-    Representation representations[] = {
-        Representation::Tagged(),  // context
-        Representation::Tagged(),  // receiver
-    };
-    descriptor->Initialize(arraysize(registers), registers, representations,
-                           &default_descriptor);
-  }
-  {
-    CallInterfaceDescriptor* descriptor =
-        isolate->call_descriptor(CallDescriptorKey::ApiFunctionCall);
-    Register registers[] = {
-        cp,  // context
-        x0,  // callee
-        x4,  // call_data
-        x2,  // holder
-        x1,  // api_function_address
-    };
-    Representation representations[] = {
-        Representation::Tagged(),    // context
-        Representation::Tagged(),    // callee
-        Representation::Tagged(),    // call_data
-        Representation::Tagged(),    // holder
-        Representation::External(),  // api_function_address
-    };
-    descriptor->Initialize(arraysize(registers), registers, representations,
-                           &default_descriptor);
-  }
+  Register registers[] = {
+      cp,  // context
+      x2,  // key
+  };
+  Representation representations[] = {
+      Representation::Tagged(),  // context
+      Representation::Tagged(),  // key
+  };
+  InitializeData(isolate, key(), arraysize(registers), registers,
+                 representations, &noInlineDescriptor);
+}
+
+
+void NamedDescriptor::Initialize(Isolate* isolate) {
+  static PlatformInterfaceDescriptor noInlineDescriptor =
+      PlatformInterfaceDescriptor(NEVER_INLINE_TARGET_ADDRESS);
+
+  Register registers[] = {
+      cp,  // context
+      x2,  // name
+  };
+  Representation representations[] = {
+      Representation::Tagged(),  // context
+      Representation::Tagged(),  // name
+  };
+  InitializeData(isolate, key(), arraysize(registers), registers,
+                 representations, &noInlineDescriptor);
+}
+
+
+void CallHandlerDescriptor::Initialize(Isolate* isolate) {
+  Register registers[] = {
+      cp,  // context
+      x0,  // receiver
+  };
+  Representation representations[] = {
+      Representation::Tagged(),  // context
+      Representation::Tagged(),  // receiver
+  };
+  InitializeData(isolate, key(), arraysize(registers), registers,
+                 representations);
+}
+
+
+void ArgumentAdaptorDescriptor::Initialize(Isolate* isolate) {
+  Register registers[] = {
+      cp,  // context
+      x1,  // JSFunction
+      x0,  // actual number of arguments
+      x2,  // expected number of arguments
+  };
+  Representation representations[] = {
+      Representation::Tagged(),     // context
+      Representation::Tagged(),     // JSFunction
+      Representation::Integer32(),  // actual number of arguments
+      Representation::Integer32(),  // expected number of arguments
+  };
+  InitializeData(isolate, key(), arraysize(registers), registers,
+                 representations);
+}
+
+
+void ApiFunctionDescriptor::Initialize(Isolate* isolate) {
+  Register registers[] = {
+      cp,  // context
+      x0,  // callee
+      x4,  // call_data
+      x2,  // holder
+      x1,  // api_function_address
+  };
+  Representation representations[] = {
+      Representation::Tagged(),    // context
+      Representation::Tagged(),    // callee
+      Representation::Tagged(),    // call_data
+      Representation::Tagged(),    // holder
+      Representation::External(),  // api_function_address
+  };
+  InitializeData(isolate, key(), arraysize(registers), registers,
+                 representations);
 }
 }
 }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64