[Interpreter] Support for operator new.

src/arm64/builtins-arm64.cc

 // Copyright 2013 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_ARM64
 
 #include "src/arm64/frames-arm64.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
@@ skipping 690 matching lines @@
     __ Pop(x1, x0);
 
     __ bind(&skip_step_in);
 
     // Call the function.
     // x0: number of arguments
     // x1: constructor function
     ParameterCount actual(x0);
     __ InvokeFunction(x1, actual, CALL_FUNCTION, NullCallWrapper());
 
-
     // Restore the context from the frame.
     // x0: result
     // jssp[0]: number of arguments (smi-tagged)
     __ Ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
 
     // Load number of arguments (smi), skipping over new.target.
     __ Peek(x1, kPointerSize);
 
     // Leave construct frame
   }
@@ skipping 1040 matching lines @@
 
 
 // static
 void Builtins::Generate_InterpreterPushArgsAndCall(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- x0 : the number of arguments (not including the receiver)
   //  -- x2 : the address of the first argument to be pushed. Subsequent
   //          arguments should be consecutive above this, in the same order as
   //          they are to be pushed onto the stack.
   //  -- x1 : the target to call (can be any Object).
+  // -----------------------------------
 
   // Find the address of the last argument.
   __ add(x3, x0, Operand(1));  // Add one for receiver.
   __ lsl(x3, x3, kPointerSizeLog2);
   __ sub(x4, x2, x3);
 
   // Push the arguments.
   Label loop_header, loop_check;
   __ Mov(x5, jssp);
   __ Claim(x3, 1);
   __ B(&loop_check);
   __ Bind(&loop_header);
   // TODO(rmcilroy): Push two at a time once we ensure we keep stack aligned.
   __ Ldr(x3, MemOperand(x2, -kPointerSize, PostIndex));
   __ Str(x3, MemOperand(x5, -kPointerSize, PreIndex));
   __ Bind(&loop_check);
   __ Cmp(x2, x4);
   __ B(gt, &loop_header);
 
   // Call the target.
   __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
 }
 
 
+// static
+void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  // -- x0 : argument count (not including receiver)
+  // -- x3 : original constructor
+  // -- x1 : constructor to call
+  // -- x2 : address of the first argument
+  // -----------------------------------
+
+  // Find the address of the last argument.
+  __ add(x5, x0, Operand(1));  // Add one for receiver (to be constructed).
+  __ lsl(x5, x5, kPointerSizeLog2);
+
+  // Set stack pointer and where to stop.
+  __ Mov(x6, jssp);
+  __ Claim(x5, 1);
+  __ sub(x4, x6, x5);
+
+  // Push a slot for the receiver.
+  __ Str(xzr, MemOperand(x6, -kPointerSize, PreIndex));
+
+  Label loop_header, loop_check;
+  // Push the arguments.
+  __ B(&loop_check);
+  __ Bind(&loop_header);
+  // TODO(rmcilroy): Push two at a time once we ensure we keep stack aligned.
+  __ Ldr(x5, MemOperand(x2, -kPointerSize, PostIndex));
+  __ Str(x5, MemOperand(x6, -kPointerSize, PreIndex));
+  __ Bind(&loop_check);
+  __ Cmp(x6, x4);
+  __ B(gt, &loop_header);
+
+  // Call the constructor with x0, x1, and x3 unmodified.
+  __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CONSTRUCT_CALL);
+}
+
+
 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
   ASM_LOCATION("Builtins::Generate_ArgumentsAdaptorTrampoline");
   // ----------- S t a t e -------------
   //  -- x0 : actual number of arguments
   //  -- x1 : function (passed through to callee)
   //  -- x2 : expected number of arguments
   // -----------------------------------
 
   Label stack_overflow;
   ArgumentAdaptorStackCheck(masm, &stack_overflow);
@@ skipping 155 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM