[turbofan] Migrate remaining DataView builtins to C++.

src/runtime/runtime-typedarray.cc

 // Copyright 2014 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/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/factory.h"
 #include "src/messages.h"
 #include "src/objects-inl.h"
@@ skipping 401 matching lines @@
   DCHECK(args.length() == 1);
   if (!args[0]->IsJSTypedArray()) {
     return isolate->heap()->false_value();
   }
 
   Handle<JSTypedArray> obj(JSTypedArray::cast(args[0]));
   return isolate->heap()->ToBoolean(obj->GetBuffer()->is_shared() &&
                                     obj->type() == kExternalInt32Array);
 }
 
-
-inline static bool NeedToFlipBytes(bool is_little_endian) {
-#ifdef V8_TARGET_LITTLE_ENDIAN
-  return !is_little_endian;
-#else
-  return is_little_endian;
-#endif
-}
-
-
-template <int n>
-inline void CopyBytes(uint8_t* target, uint8_t* source) {
-  for (int i = 0; i < n; i++) {
-    *(target++) = *(source++);
-  }
-}
-
-
-template <int n>
-inline void FlipBytes(uint8_t* target, uint8_t* source) {
-  source = source + (n - 1);
-  for (int i = 0; i < n; i++) {
-    *(target++) = *(source--);
-  }
-}
-
-
-template <typename T>
-inline static bool DataViewGetValue(Isolate* isolate,
-                                    Handle<JSDataView> data_view,
-                                    Handle<Object> byte_offset_obj,
-                                    bool is_little_endian, T* result) {
-  size_t byte_offset = 0;
-  if (!TryNumberToSize(*byte_offset_obj, &byte_offset)) {
-    return false;
-  }
-  Handle<JSArrayBuffer> buffer(JSArrayBuffer::cast(data_view->buffer()));
-
-  size_t data_view_byte_offset = NumberToSize(data_view->byte_offset());
-  size_t data_view_byte_length = NumberToSize(data_view->byte_length());
-  if (byte_offset + sizeof(T) > data_view_byte_length ||
-      byte_offset + sizeof(T) < byte_offset) {  // overflow
-    return false;
-  }
-
-  union Value {
-    T data;
-    uint8_t bytes[sizeof(T)];
-  };
-
-  Value value;
-  size_t buffer_offset = data_view_byte_offset + byte_offset;
-  DCHECK(NumberToSize(buffer->byte_length()) >= buffer_offset + sizeof(T));
-  uint8_t* source =
-      static_cast<uint8_t*>(buffer->backing_store()) + buffer_offset;
-  if (NeedToFlipBytes(is_little_endian)) {
-    FlipBytes<sizeof(T)>(value.bytes, source);
-  } else {
-    CopyBytes<sizeof(T)>(value.bytes, source);
-  }
-  *result = value.data;
-  return true;
-}
-
-
-template <typename T>
-static bool DataViewSetValue(Isolate* isolate, Handle<JSDataView> data_view,
-                             Handle<Object> byte_offset_obj,
-                             bool is_little_endian, T data) {
-  size_t byte_offset = 0;
-  if (!TryNumberToSize(*byte_offset_obj, &byte_offset)) {
-    return false;
-  }
-  Handle<JSArrayBuffer> buffer(JSArrayBuffer::cast(data_view->buffer()));
-
-  size_t data_view_byte_offset = NumberToSize(data_view->byte_offset());
-  size_t data_view_byte_length = NumberToSize(data_view->byte_length());
-  if (byte_offset + sizeof(T) > data_view_byte_length ||
-      byte_offset + sizeof(T) < byte_offset) {  // overflow
-    return false;
-  }
-
-  union Value {
-    T data;
-    uint8_t bytes[sizeof(T)];
-  };
-
-  Value value;
-  value.data = data;
-  size_t buffer_offset = data_view_byte_offset + byte_offset;
-  DCHECK(NumberToSize(buffer->byte_length()) >= buffer_offset + sizeof(T));
-  uint8_t* target =
-      static_cast<uint8_t*>(buffer->backing_store()) + buffer_offset;
-  if (NeedToFlipBytes(is_little_endian)) {
-    FlipBytes<sizeof(T)>(target, value.bytes);
-  } else {
-    CopyBytes<sizeof(T)>(target, value.bytes);
-  }
-  return true;
-}
-
-
-#define DATA_VIEW_GETTER(TypeName, Type, Converter)                        \
-  RUNTIME_FUNCTION(Runtime_DataViewGet##TypeName) {                        \
-    HandleScope scope(isolate);                                            \
-    DCHECK(args.length() == 3);                                            \
-    CONVERT_ARG_HANDLE_CHECKED(JSDataView, holder, 0);                     \
-    CONVERT_NUMBER_ARG_HANDLE_CHECKED(offset, 1);                          \
-    CONVERT_BOOLEAN_ARG_CHECKED(is_little_endian, 2);                      \
-    Type result;                                                           \
-    if (DataViewGetValue(isolate, holder, offset, is_little_endian,        \
-                         &result)) {                                       \
-      return *isolate->factory()->Converter(result);                       \
-    } else {                                                               \
-      THROW_NEW_ERROR_RETURN_FAILURE(                                      \
-          isolate,                                                         \
-          NewRangeError(MessageTemplate::kInvalidDataViewAccessorOffset)); \
-    }                                                                      \
-  }
-
-DATA_VIEW_GETTER(Uint8, uint8_t, NewNumberFromUint)
-DATA_VIEW_GETTER(Int8, int8_t, NewNumberFromInt)
-DATA_VIEW_GETTER(Uint16, uint16_t, NewNumberFromUint)
-DATA_VIEW_GETTER(Int16, int16_t, NewNumberFromInt)
-DATA_VIEW_GETTER(Uint32, uint32_t, NewNumberFromUint)
-DATA_VIEW_GETTER(Int32, int32_t, NewNumberFromInt)
-DATA_VIEW_GETTER(Float32, float, NewNumber)
-DATA_VIEW_GETTER(Float64, double, NewNumber)
-
-#undef DATA_VIEW_GETTER
-
-
-template <typename T>
-static T DataViewConvertValue(double value);
-
-
-template <>
-int8_t DataViewConvertValue<int8_t>(double value) {
-  return static_cast<int8_t>(DoubleToInt32(value));
-}
-
-
-template <>
-int16_t DataViewConvertValue<int16_t>(double value) {
-  return static_cast<int16_t>(DoubleToInt32(value));
-}
-
-
-template <>
-int32_t DataViewConvertValue<int32_t>(double value) {
-  return DoubleToInt32(value);
-}
-
-
-template <>
-uint8_t DataViewConvertValue<uint8_t>(double value) {
-  return static_cast<uint8_t>(DoubleToUint32(value));
-}
-
-
-template <>
-uint16_t DataViewConvertValue<uint16_t>(double value) {
-  return static_cast<uint16_t>(DoubleToUint32(value));
-}
-
-
-template <>
-uint32_t DataViewConvertValue<uint32_t>(double value) {
-  return DoubleToUint32(value);
-}
-
-
-template <>
-float DataViewConvertValue<float>(double value) {
-  return static_cast<float>(value);
-}
-
-
-template <>
-double DataViewConvertValue<double>(double value) {
-  return value;
-}
-
-
-#define DATA_VIEW_SETTER(TypeName, Type)                                   \
-  RUNTIME_FUNCTION(Runtime_DataViewSet##TypeName) {                        \
-    HandleScope scope(isolate);                                            \
-    DCHECK(args.length() == 4);                                            \
-    CONVERT_ARG_HANDLE_CHECKED(JSDataView, holder, 0);                     \
-    CONVERT_NUMBER_ARG_HANDLE_CHECKED(offset, 1);                          \
-    CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2);                           \
-    CONVERT_BOOLEAN_ARG_CHECKED(is_little_endian, 3);                      \
-    Type v = DataViewConvertValue<Type>(value->Number());                  \
-    if (DataViewSetValue(isolate, holder, offset, is_little_endian, v)) {  \
-      return isolate->heap()->undefined_value();                           \
-    } else {                                                               \
-      THROW_NEW_ERROR_RETURN_FAILURE(                                      \
-          isolate,                                                         \
-          NewRangeError(MessageTemplate::kInvalidDataViewAccessorOffset)); \
-    }                                                                      \
-  }
-
-DATA_VIEW_SETTER(Uint8, uint8_t)
-DATA_VIEW_SETTER(Int8, int8_t)
-DATA_VIEW_SETTER(Uint16, uint16_t)
-DATA_VIEW_SETTER(Int16, int16_t)
-DATA_VIEW_SETTER(Uint32, uint32_t)
-DATA_VIEW_SETTER(Int32, int32_t)
-DATA_VIEW_SETTER(Float32, float)
-DATA_VIEW_SETTER(Float64, double)
-
-#undef DATA_VIEW_SETTER
 }  // namespace internal
 }  // namespace v8