[Interpreter] Support for operator new.

src/ppc/builtins-ppc.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.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 965 matching lines @@
 
 
 // static
 void Builtins::Generate_InterpreterPushArgsAndCall(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- r3 : the number of arguments (not including the receiver)
   //  -- r5 : 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.
   //  -- r4 : the target to call (can be any Object).
+  // -----------------------------------
 
   // Calculate number of arguments (add one for receiver).
   __ addi(r6, r3, Operand(1));
 
   // Push the arguments.
   Label loop;
   __ addi(r5, r5, Operand(kPointerSize));  // Bias up for LoadPU
   __ mtctr(r6);
   __ bind(&loop);
   __ LoadPU(r6, MemOperand(r5, -kPointerSize));
   __ push(r6);
   __ bdnz(&loop);
 
   // Call the target.
   __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
 }
 
 
+// static
+void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  // -- r3 : argument count (not including receiver)
+  // -- r6 : original constructor
+  // -- r4 : constructor to call
+  // -- r5 : address of the first argument
+  // -----------------------------------
+
+  // Calculate number of arguments.
+  __ mr(r7, r3);
+
+  // Push a slot for the receiver.
+  __ push(r3);
+
+  // Skip pushing arguments if none.
+  Label loop_end;
+  __ cmpi(r7, Operand(0));
+  __ beq(&loop_end);
+
+  // Push the arguments
+  Label loop;
+  __ addi(r5, r5, Operand(kPointerSize));  // Bias up for LoadPU
+  __ mtctr(r7);
+  __ bind(&loop);
+  __ LoadPU(r7, MemOperand(r5, -kPointerSize));
+  __ push(r7);
+  __ bdnz(&loop);
+  __ bind(&loop_end);
+
+  // Call the constructor with r3, r4, and r6 unmodified.
+  __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CONSTRUCT_CALL);
+}
+
+
 void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   CallRuntimePassFunction(masm, Runtime::kCompileLazy);
   GenerateTailCallToReturnedCode(masm);
 }
 
 
 static void CallCompileOptimized(MacroAssembler* masm, bool concurrent) {
   FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
   // Push a copy of the function onto the stack.
   // Push function as parameter to the runtime call.
@@ skipping 907 matching lines @@
     __ bkpt(0);
   }
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC