PPC: Fix "[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 957 matching lines @@
   __ LeaveFrame(StackFrame::JAVA_SCRIPT);
 
   // Drop receiver + arguments and return.
   __ lwz(r0, FieldMemOperand(kInterpreterBytecodeArrayRegister,
                              BytecodeArray::kParameterSizeOffset));
   __ add(sp, sp, r0);
   __ blr();
 }
 
 
+static void Generate_InterpreterPushArgs(MacroAssembler* masm, Register index,
+                                         Register count, Register scratch) {
+  Label loop;
+  __ addi(index, index, Operand(kPointerSize));  // Bias up for LoadPU
+  __ mtctr(count);
+  __ bind(&loop);
+  __ LoadPU(scratch, MemOperand(index, -kPointerSize));
+  __ push(scratch);
+  __ bdnz(&loop);
+}
+
+
 // 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);
+  Generate_InterpreterPushArgs(masm, r5, r6, r7);
 
   // 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 a slot for the receiver to be constructed.
   __ 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);
+  // Push the arguments (skip if none).
+  Label skip;
+  __ cmpi(r3, Operand::Zero());
+  __ beq(&skip);
+  Generate_InterpreterPushArgs(masm, r5, r3, r7);
+  __ bind(&skip);
 
   // 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);
 }
@@ skipping 913 matching lines @@
     __ bkpt(0);
   }
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC