[Interpreter] Support for operator new.

src/mips/builtins-mips.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.
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 968 matching lines @@
 
 
 // static
 void Builtins::Generate_InterpreterPushArgsAndCall(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- a0 : the number of arguments (not including the receiver)
   //  -- a2 : 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.
   //  -- a1 : the target to call (can be any Object).
+  // -----------------------------------
 
   // Find the address of the last argument.
   __ Addu(a3, a0, Operand(1));  // Add one for receiver.
   __ sll(a3, a3, kPointerSizeLog2);
   __ Subu(a3, a2, Operand(a3));
 
   // Push the arguments.
   Label loop_header, loop_check;
   __ Branch(&loop_check);
   __ bind(&loop_header);
   __ lw(t0, MemOperand(a2));
   __ Addu(a2, a2, Operand(-kPointerSize));
   __ push(t0);
   __ bind(&loop_check);
   __ Branch(&loop_header, gt, a2, Operand(a3));
 
   // Call the target.
   __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
 }
 
 
+// static
+void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  // -- a0 : argument count (not including receiver)
+  // -- a3 : original constructor
+  // -- a1 : constructor to call
+  // -- a2 : address of the first argument
+  // -----------------------------------
+
+  // Find the address of the last argument.
+  __ sll(t0, a0, kPointerSizeLog2);
+  __ Subu(t0, a2, Operand(t0));
+
+  // Push a slot for the receiver.
+  __ push(zero_reg);
+
+  // Push the arguments.
+  Label loop_header, loop_check;
+  __ Branch(&loop_check);
+  __ bind(&loop_header);
+  __ lw(t1, MemOperand(a2));
+  __ Addu(a2, a2, Operand(-kPointerSize));
+  __ push(t1);
+  __ bind(&loop_check);
+  __ Branch(&loop_header, gt, a2, Operand(t0));
+
+  // Call the constructor with a0, a1, and a3 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) {
   FrameScope scope(masm, StackFrame::INTERNAL);
   // Push a copy of the function onto the stack.
   // Push function as parameter to the runtime call.
@@ skipping 886 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS