[Interpreter] Support for operator new.

src/arm/builtins-arm.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_ARM
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 958 matching lines @@
   __ LeaveFrame(StackFrame::JAVA_SCRIPT);
 
   // Drop receiver + arguments and return.
   __ ldr(ip, FieldMemOperand(kInterpreterBytecodeArrayRegister,
                              BytecodeArray::kParameterSizeOffset));
   __ add(sp, sp, ip, LeaveCC);
   __ Jump(lr);
 }
 
 
+static void Generate_InterpreterPushArgs(MacroAssembler* masm, Register index,
+                                         Register limit, Register scratch) {
+  Label loop_header, loop_check;
+  __ b(al, &loop_check);
+  __ bind(&loop_header);
+  __ ldr(scratch, MemOperand(index, -kPointerSize, PostIndex));
+  __ push(scratch);
+  __ bind(&loop_check);
+  __ cmp(index, limit);
+  __ b(gt, &loop_header);
+}
+
+
 // static
 void Builtins::Generate_InterpreterPushArgsAndCall(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- r0 : the number of arguments (not including the receiver)
   //  -- r2 : 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.
   //  -- r1 : the target to call (can be any Object).
+  // -----------------------------------
 
   // Find the address of the last argument.
   __ add(r3, r0, Operand(1));  // Add one for receiver.
   __ mov(r3, Operand(r3, LSL, kPointerSizeLog2));
   __ sub(r3, r2, r3);
 
   // Push the arguments.
-  Label loop_header, loop_check;
-  __ b(al, &loop_check);
-  __ bind(&loop_header);
-  __ ldr(r4, MemOperand(r2, -kPointerSize, PostIndex));
-  __ push(r4);
-  __ bind(&loop_check);
-  __ cmp(r2, r3);
-  __ b(gt, &loop_header);
+  Generate_InterpreterPushArgs(masm, r2, r3, r4);
 
   // Call the target.
   __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
 }
 
 
+// static
+void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  // -- r0 : argument count (not including receiver)
+  // -- r3 : original constructor
+  // -- r1 : constructor to call
+  // -- r2 : address of the first argument
+  // -----------------------------------
+
+  // Find the address of the last argument.
+  __ mov(r4, Operand(r0, LSL, kPointerSizeLog2));
+  __ sub(r4, r2, r4);
+
+  // Push a slot for the receiver to be constructed.
+  __ push(r0);
+
+  // Push the arguments.
+  Generate_InterpreterPushArgs(masm, r2, r4, r5);
+
+  // Call the constructor with r0, r1, and r3 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(r1);
@@ skipping 860 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM