PPC/s390: [builtins] Port parameter and argument-related code stubs to CSA

src/s390/code-stubs-s390.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_S390
 
 #include "src/code-stubs.h"
 #include "src/api-arguments.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 3198 matching lines @@
 
   Label fast_elements_case;
   __ CmpP(r5, Operand(FAST_ELEMENTS));
   __ beq(&fast_elements_case);
   GenerateCase(masm, FAST_HOLEY_ELEMENTS);
 
   __ bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
-void FastNewRestParameterStub::Generate(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r3 : function
-  //  -- cp : context
-  //  -- fp : frame pointer
-  //  -- lr : return address
-  // -----------------------------------
-  __ AssertFunction(r3);
-
-  // Make r4 point to the JavaScript frame.
-  __ LoadRR(r4, fp);
-  if (skip_stub_frame()) {
-    // For Ignition we need to skip the handler/stub frame to reach the
-    // JavaScript frame for the function.
-    __ LoadP(r4, MemOperand(r4, StandardFrameConstants::kCallerFPOffset));
-  }
-  if (FLAG_debug_code) {
-    Label ok;
-    __ LoadP(ip, MemOperand(r4, StandardFrameConstants::kFunctionOffset));
-    __ CmpP(ip, r3);
-    __ b(&ok, Label::kNear);
-    __ Abort(kInvalidFrameForFastNewRestArgumentsStub);
-    __ bind(&ok);
-  }
-
-  // Check if we have rest parameters (only possible if we have an
-  // arguments adaptor frame below the function frame).
-  Label no_rest_parameters;
-  __ LoadP(r4, MemOperand(r4, StandardFrameConstants::kCallerFPOffset));
-  __ LoadP(ip, MemOperand(r4, CommonFrameConstants::kContextOrFrameTypeOffset));
-  __ CmpSmiLiteral(ip, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR), r0);
-  __ bne(&no_rest_parameters);
-
-  // Check if the arguments adaptor frame contains more arguments than
-  // specified by the function's internal formal parameter count.
-  Label rest_parameters;
-  __ LoadP(r2, MemOperand(r4, ArgumentsAdaptorFrameConstants::kLengthOffset));
-  __ LoadP(r5, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadW(
-      r5, FieldMemOperand(r5, SharedFunctionInfo::kFormalParameterCountOffset));
-#if V8_TARGET_ARCH_S390X
-  __ SmiTag(r5);
-#endif
-  __ SubP(r2, r2, r5);
-  __ bgt(&rest_parameters);
-
-  // Return an empty rest parameter array.
-  __ bind(&no_rest_parameters);
-  {
-    // ----------- S t a t e -------------
-    //  -- cp : context
-    //  -- lr : return address
-    // -----------------------------------
-
-    // Allocate an empty rest parameter array.
-    Label allocate, done_allocate;
-    __ Allocate(JSArray::kSize, r2, r3, r4, &allocate, NO_ALLOCATION_FLAGS);
-    __ bind(&done_allocate);
-
-    // Setup the rest parameter array in r0.
-    __ LoadNativeContextSlot(Context::JS_ARRAY_FAST_ELEMENTS_MAP_INDEX, r3);
-    __ StoreP(r3, FieldMemOperand(r2, JSArray::kMapOffset), r0);
-    __ LoadRoot(r3, Heap::kEmptyFixedArrayRootIndex);
-    __ StoreP(r3, FieldMemOperand(r2, JSArray::kPropertiesOffset), r0);
-    __ StoreP(r3, FieldMemOperand(r2, JSArray::kElementsOffset), r0);
-    __ LoadImmP(r3, Operand::Zero());
-    __ StoreP(r3, FieldMemOperand(r2, JSArray::kLengthOffset), r0);
-    STATIC_ASSERT(JSArray::kSize == 4 * kPointerSize);
-    __ Ret();
-
-    // Fall back to %AllocateInNewSpace.
-    __ bind(&allocate);
-    {
-      FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-      __ Push(Smi::FromInt(JSArray::kSize));
-      __ CallRuntime(Runtime::kAllocateInNewSpace);
-    }
-    __ b(&done_allocate);
-  }
-
-  __ bind(&rest_parameters);
-  {
-    // Compute the pointer to the first rest parameter (skippping the receiver).
-    __ SmiToPtrArrayOffset(r8, r2);
-    __ AddP(r4, r4, r8);
-    __ AddP(r4, r4, Operand(StandardFrameConstants::kCallerSPOffset));
-
-    // ----------- S t a t e -------------
-    //  -- cp : context
-    //  -- r2 : number of rest parameters (tagged)
-    //  -- r3 : function
-    //  -- r4 : pointer just past first rest parameters
-    //  -- r8 : size of rest parameters
-    //  -- lr : return address
-    // -----------------------------------
-
-    // Allocate space for the rest parameter array plus the backing store.
-    Label allocate, done_allocate;
-    __ mov(r9, Operand(JSArray::kSize + FixedArray::kHeaderSize));
-    __ AddP(r9, r9, r8);
-    __ Allocate(r9, r5, r6, r7, &allocate, NO_ALLOCATION_FLAGS);
-    __ bind(&done_allocate);
-
-    // Setup the elements array in r5.
-    __ LoadRoot(r3, Heap::kFixedArrayMapRootIndex);
-    __ StoreP(r3, FieldMemOperand(r5, FixedArray::kMapOffset), r0);
-    __ StoreP(r2, FieldMemOperand(r5, FixedArray::kLengthOffset), r0);
-    __ AddP(r6, r5,
-            Operand(FixedArray::kHeaderSize - kHeapObjectTag - kPointerSize));
-    {
-      Label loop;
-      __ SmiUntag(r1, r2);
-      // __ mtctr(r0);
-      __ bind(&loop);
-      __ lay(r4, MemOperand(r4, -kPointerSize));
-      __ LoadP(ip, MemOperand(r4));
-      __ la(r6, MemOperand(r6, kPointerSize));
-      __ StoreP(ip, MemOperand(r6));
-      // __ bdnz(&loop);
-      __ BranchOnCount(r1, &loop);
-      __ AddP(r6, r6, Operand(kPointerSize));
-    }
-
-    // Setup the rest parameter array in r6.
-    __ LoadNativeContextSlot(Context::JS_ARRAY_FAST_ELEMENTS_MAP_INDEX, r3);
-    __ StoreP(r3, MemOperand(r6, JSArray::kMapOffset));
-    __ LoadRoot(r3, Heap::kEmptyFixedArrayRootIndex);
-    __ StoreP(r3, MemOperand(r6, JSArray::kPropertiesOffset));
-    __ StoreP(r5, MemOperand(r6, JSArray::kElementsOffset));
-    __ StoreP(r2, MemOperand(r6, JSArray::kLengthOffset));
-    STATIC_ASSERT(JSArray::kSize == 4 * kPointerSize);
-    __ AddP(r2, r6, Operand(kHeapObjectTag));
-    __ Ret();
-
-    // Fall back to %AllocateInNewSpace (if not too big).
-    Label too_big_for_new_space;
-    __ bind(&allocate);
-    __ CmpP(r9, Operand(kMaxRegularHeapObjectSize));
-    __ bgt(&too_big_for_new_space);
-    {
-      FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-      __ SmiTag(r9);
-      __ Push(r2, r4, r9);
-      __ CallRuntime(Runtime::kAllocateInNewSpace);
-      __ LoadRR(r5, r2);
-      __ Pop(r2, r4);
-    }
-    __ b(&done_allocate);
-
-    // Fall back to %NewRestParameter.
-    __ bind(&too_big_for_new_space);
-    __ push(r3);
-    __ TailCallRuntime(Runtime::kNewRestParameter);
-  }
-}
-
-void FastNewSloppyArgumentsStub::Generate(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r3 : function
-  //  -- cp : context
-  //  -- fp : frame pointer
-  //  -- lr : return address
-  // -----------------------------------
-  __ AssertFunction(r3);
-
-  // Make r9 point to the JavaScript frame.
-  __ LoadRR(r9, fp);
-  if (skip_stub_frame()) {
-    // For Ignition we need to skip the handler/stub frame to reach the
-    // JavaScript frame for the function.
-    __ LoadP(r9, MemOperand(r9, StandardFrameConstants::kCallerFPOffset));
-  }
-  if (FLAG_debug_code) {
-    Label ok;
-    __ LoadP(ip, MemOperand(r9, StandardFrameConstants::kFunctionOffset));
-    __ CmpP(ip, r3);
-    __ beq(&ok, Label::kNear);
-    __ Abort(kInvalidFrameForFastNewRestArgumentsStub);
-    __ bind(&ok);
-  }
-
-  // TODO(bmeurer): Cleanup to match the FastNewStrictArgumentsStub.
-  __ LoadP(r4, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadW(
-      r4, FieldMemOperand(r4, SharedFunctionInfo::kFormalParameterCountOffset));
-#if V8_TARGET_ARCH_S390X
-  __ SmiTag(r4);
-#endif
-  __ SmiToPtrArrayOffset(r5, r4);
-  __ AddP(r5, r9, r5);
-  __ AddP(r5, r5, Operand(StandardFrameConstants::kCallerSPOffset));
-
-  // r3 : function
-  // r4 : number of parameters (tagged)
-  // r5 : parameters pointer
-  // r9 : JavaScript frame pointer
-  // Registers used over whole function:
-  // r7 : arguments count (tagged)
-  // r8 : mapped parameter count (tagged)
-
-  // Check if the calling frame is an arguments adaptor frame.
-  Label adaptor_frame, try_allocate, runtime;
-  __ LoadP(r6, MemOperand(r9, StandardFrameConstants::kCallerFPOffset));
-  __ LoadP(r2, MemOperand(r6, CommonFrameConstants::kContextOrFrameTypeOffset));
-  __ LoadSmiLiteral(r0, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
-  __ CmpP(r2, r0);
-  __ beq(&adaptor_frame);
-
-  // No adaptor, parameter count = argument count.
-  __ LoadRR(r7, r4);
-  __ LoadRR(r8, r4);
-  __ b(&try_allocate);
-
-  // We have an adaptor frame. Patch the parameters pointer.
-  __ bind(&adaptor_frame);
-  __ LoadP(r7, MemOperand(r6, ArgumentsAdaptorFrameConstants::kLengthOffset));
-  __ SmiToPtrArrayOffset(r5, r7);
-  __ AddP(r5, r5, r6);
-  __ AddP(r5, r5, Operand(StandardFrameConstants::kCallerSPOffset));
-
-  // r7 = argument count (tagged)
-  // r8 = parameter count (tagged)
-  // Compute the mapped parameter count = min(r4, r7) in r8.
-  __ CmpP(r4, r7);
-  Label skip;
-  __ LoadRR(r8, r4);
-  __ blt(&skip);
-  __ LoadRR(r8, r7);
-  __ bind(&skip);
-
-  __ bind(&try_allocate);
-
-  // Compute the sizes of backing store, parameter map, and arguments object.
-  // 1. Parameter map, has 2 extra words containing context and backing store.
-  const int kParameterMapHeaderSize =
-      FixedArray::kHeaderSize + 2 * kPointerSize;
-  // If there are no mapped parameters, we do not need the parameter_map.
-  __ CmpSmiLiteral(r8, Smi::kZero, r0);
-  Label skip2, skip3;
-  __ bne(&skip2);
-  __ LoadImmP(r1, Operand::Zero());
-  __ b(&skip3);
-  __ bind(&skip2);
-  __ SmiToPtrArrayOffset(r1, r8);
-  __ AddP(r1, r1, Operand(kParameterMapHeaderSize));
-  __ bind(&skip3);
-
-  // 2. Backing store.
-  __ SmiToPtrArrayOffset(r6, r7);
-  __ AddP(r1, r1, r6);
-  __ AddP(r1, r1, Operand(FixedArray::kHeaderSize));
-
-  // 3. Arguments object.
-  __ AddP(r1, r1, Operand(JSSloppyArgumentsObject::kSize));
-
-  // Do the allocation of all three objects in one go.
-  __ Allocate(r1, r2, r1, r6, &runtime, NO_ALLOCATION_FLAGS);
-
-  // r2 = address of new object(s) (tagged)
-  // r4 = argument count (smi-tagged)
-  // Get the arguments boilerplate from the current native context into r3.
-  const int kNormalOffset =
-      Context::SlotOffset(Context::SLOPPY_ARGUMENTS_MAP_INDEX);
-  const int kAliasedOffset =
-      Context::SlotOffset(Context::FAST_ALIASED_ARGUMENTS_MAP_INDEX);
-
-  __ LoadP(r6, NativeContextMemOperand());
-  __ CmpP(r8, Operand::Zero());
-  Label skip4, skip5;
-  __ bne(&skip4);
-  __ LoadP(r6, MemOperand(r6, kNormalOffset));
-  __ b(&skip5);
-  __ bind(&skip4);
-  __ LoadP(r6, MemOperand(r6, kAliasedOffset));
-  __ bind(&skip5);
-
-  // r2 = address of new object (tagged)
-  // r4 = argument count (smi-tagged)
-  // r6 = address of arguments map (tagged)
-  // r8 = mapped parameter count (tagged)
-  __ StoreP(r6, FieldMemOperand(r2, JSObject::kMapOffset), r0);
-  __ LoadRoot(r1, Heap::kEmptyFixedArrayRootIndex);
-  __ StoreP(r1, FieldMemOperand(r2, JSObject::kPropertiesOffset), r0);
-  __ StoreP(r1, FieldMemOperand(r2, JSObject::kElementsOffset), r0);
-
-  // Set up the callee in-object property.
-  __ AssertNotSmi(r3);
-  __ StoreP(r3, FieldMemOperand(r2, JSSloppyArgumentsObject::kCalleeOffset),
-            r0);
-
-  // Use the length (smi tagged) and set that as an in-object property too.
-  __ AssertSmi(r7);
-  __ StoreP(r7, FieldMemOperand(r2, JSSloppyArgumentsObject::kLengthOffset),
-            r0);
-
-  // Set up the elements pointer in the allocated arguments object.
-  // If we allocated a parameter map, r6 will point there, otherwise
-  // it will point to the backing store.
-  __ AddP(r6, r2, Operand(JSSloppyArgumentsObject::kSize));
-  __ StoreP(r6, FieldMemOperand(r2, JSObject::kElementsOffset), r0);
-
-  // r2 = address of new object (tagged)
-  // r4 = argument count (tagged)
-  // r6 = address of parameter map or backing store (tagged)
-  // r8 = mapped parameter count (tagged)
-  // Initialize parameter map. If there are no mapped arguments, we're done.
-  Label skip_parameter_map;
-  __ CmpSmiLiteral(r8, Smi::kZero, r0);
-  Label skip6;
-  __ bne(&skip6);
-  // Move backing store address to r3, because it is
-  // expected there when filling in the unmapped arguments.
-  __ LoadRR(r3, r6);
-  __ b(&skip_parameter_map);
-  __ bind(&skip6);
-
-  __ LoadRoot(r7, Heap::kSloppyArgumentsElementsMapRootIndex);
-  __ StoreP(r7, FieldMemOperand(r6, FixedArray::kMapOffset), r0);
-  __ AddSmiLiteral(r7, r8, Smi::FromInt(2), r0);
-  __ StoreP(r7, FieldMemOperand(r6, FixedArray::kLengthOffset), r0);
-  __ StoreP(cp, FieldMemOperand(r6, FixedArray::kHeaderSize + 0 * kPointerSize),
-            r0);
-  __ SmiToPtrArrayOffset(r7, r8);
-  __ AddP(r7, r7, r6);
-  __ AddP(r7, r7, Operand(kParameterMapHeaderSize));
-  __ StoreP(r7, FieldMemOperand(r6, FixedArray::kHeaderSize + 1 * kPointerSize),
-            r0);
-
-  // Copy the parameter slots and the holes in the arguments.
-  // We need to fill in mapped_parameter_count slots. They index the context,
-  // where parameters are stored in reverse order, at
-  //   MIN_CONTEXT_SLOTS .. MIN_CONTEXT_SLOTS+parameter_count-1
-  // The mapped parameter thus need to get indices
-  //   MIN_CONTEXT_SLOTS+parameter_count-1 ..
-  //       MIN_CONTEXT_SLOTS+parameter_count-mapped_parameter_count
-  // We loop from right to left.
-  Label parameters_loop;
-  __ LoadRR(r7, r8);
-  __ AddSmiLiteral(r1, r4, Smi::FromInt(Context::MIN_CONTEXT_SLOTS), r0);
-  __ SubP(r1, r1, r8);
-  __ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
-  __ SmiToPtrArrayOffset(r3, r7);
-  __ AddP(r3, r3, r6);
-  __ AddP(r3, r3, Operand(kParameterMapHeaderSize));
-
-  // r3 = address of backing store (tagged)
-  // r6 = address of parameter map (tagged)
-  // r7 = temporary scratch (a.o., for address calculation)
-  // r9 = temporary scratch (a.o., for address calculation)
-  // ip = the hole value
-  __ SmiUntag(r7);
-  __ push(r4);
-  __ LoadRR(r4, r7);
-  __ ShiftLeftP(r7, r7, Operand(kPointerSizeLog2));
-  __ AddP(r9, r3, r7);
-  __ AddP(r7, r6, r7);
-  __ AddP(r9, r9, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
-  __ AddP(r7, r7, Operand(kParameterMapHeaderSize - kHeapObjectTag));
-
-  __ bind(&parameters_loop);
-  __ StoreP(r1, MemOperand(r7, -kPointerSize));
-  __ lay(r7, MemOperand(r7, -kPointerSize));
-  __ StoreP(ip, MemOperand(r9, -kPointerSize));
-  __ lay(r9, MemOperand(r9, -kPointerSize));
-  __ AddSmiLiteral(r1, r1, Smi::FromInt(1), r0);
-  __ BranchOnCount(r4, &parameters_loop);
-  __ pop(r4);
-
-  // Restore r7 = argument count (tagged).
-  __ LoadP(r7, FieldMemOperand(r2, JSSloppyArgumentsObject::kLengthOffset));
-
-  __ bind(&skip_parameter_map);
-  // r2 = address of new object (tagged)
-  // r3 = address of backing store (tagged)
-  // r7 = argument count (tagged)
-  // r8 = mapped parameter count (tagged)
-  // r1 = scratch
-  // Copy arguments header and remaining slots (if there are any).
-  __ LoadRoot(r1, Heap::kFixedArrayMapRootIndex);
-  __ StoreP(r1, FieldMemOperand(r3, FixedArray::kMapOffset), r0);
-  __ StoreP(r7, FieldMemOperand(r3, FixedArray::kLengthOffset), r0);
-  __ SubP(r1, r7, r8);
-  __ Ret(eq);
-
-  Label arguments_loop;
-  __ SmiUntag(r1);
-  __ LoadRR(r4, r1);
-
-  __ SmiToPtrArrayOffset(r0, r8);
-  __ SubP(r5, r5, r0);
-  __ AddP(r1, r3, r0);
-  __ AddP(r1, r1,
-          Operand(FixedArray::kHeaderSize - kHeapObjectTag - kPointerSize));
-
-  __ bind(&arguments_loop);
-  __ LoadP(r6, MemOperand(r5, -kPointerSize));
-  __ lay(r5, MemOperand(r5, -kPointerSize));
-  __ StoreP(r6, MemOperand(r1, kPointerSize));
-  __ la(r1, MemOperand(r1, kPointerSize));
-  __ BranchOnCount(r4, &arguments_loop);
-
-  // Return.
-  __ Ret();
-
-  // Do the runtime call to allocate the arguments object.
-  // r7 = argument count (tagged)
-  __ bind(&runtime);
-  __ Push(r3, r5, r7);
-  __ TailCallRuntime(Runtime::kNewSloppyArguments);
-}
-
-void FastNewStrictArgumentsStub::Generate(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r3 : function
-  //  -- cp : context
-  //  -- fp : frame pointer
-  //  -- lr : return address
-  // -----------------------------------
-  __ AssertFunction(r3);
-
-  // Make r4 point to the JavaScript frame.
-  __ LoadRR(r4, fp);
-  if (skip_stub_frame()) {
-    // For Ignition we need to skip the handler/stub frame to reach the
-    // JavaScript frame for the function.
-    __ LoadP(r4, MemOperand(r4, StandardFrameConstants::kCallerFPOffset));
-  }
-  if (FLAG_debug_code) {
-    Label ok;
-    __ LoadP(ip, MemOperand(r4, StandardFrameConstants::kFunctionOffset));
-    __ CmpP(ip, r3);
-    __ beq(&ok, Label::kNear);
-    __ Abort(kInvalidFrameForFastNewRestArgumentsStub);
-    __ bind(&ok);
-  }
-
-  // Check if we have an arguments adaptor frame below the function frame.
-  Label arguments_adaptor, arguments_done;
-  __ LoadP(r5, MemOperand(r4, StandardFrameConstants::kCallerFPOffset));
-  __ LoadP(ip, MemOperand(r5, CommonFrameConstants::kContextOrFrameTypeOffset));
-  __ CmpSmiLiteral(ip, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR), r0);
-  __ beq(&arguments_adaptor);
-  {
-    __ LoadP(r6, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-    __ LoadW(r2, FieldMemOperand(
-                     r6, SharedFunctionInfo::kFormalParameterCountOffset));
-#if V8_TARGET_ARCH_S390X
-    __ SmiTag(r2);
-#endif
-    __ SmiToPtrArrayOffset(r8, r2);
-    __ AddP(r4, r4, r8);
-  }
-  __ b(&arguments_done);
-  __ bind(&arguments_adaptor);
-  {
-    __ LoadP(r2, MemOperand(r5, ArgumentsAdaptorFrameConstants::kLengthOffset));
-    __ SmiToPtrArrayOffset(r8, r2);
-    __ AddP(r4, r5, r8);
-  }
-  __ bind(&arguments_done);
-  __ AddP(r4, r4, Operand(StandardFrameConstants::kCallerSPOffset));
-
-  // ----------- S t a t e -------------
-  //  -- cp : context
-  //  -- r2 : number of rest parameters (tagged)
-  //  -- r3 : function
-  //  -- r4 : pointer just past first rest parameters
-  //  -- r8 : size of rest parameters
-  //  -- lr : return address
-  // -----------------------------------
-
-  // Allocate space for the strict arguments object plus the backing store.
-  Label allocate, done_allocate;
-  __ mov(r9, Operand(JSStrictArgumentsObject::kSize + FixedArray::kHeaderSize));
-  __ AddP(r9, r9, r8);
-  __ Allocate(r9, r5, r6, r7, &allocate, NO_ALLOCATION_FLAGS);
-  __ bind(&done_allocate);
-
-  // Setup the elements array in r5.
-  __ LoadRoot(r3, Heap::kFixedArrayMapRootIndex);
-  __ StoreP(r3, FieldMemOperand(r5, FixedArray::kMapOffset), r0);
-  __ StoreP(r2, FieldMemOperand(r5, FixedArray::kLengthOffset), r0);
-  __ AddP(r6, r5,
-          Operand(FixedArray::kHeaderSize - kHeapObjectTag - kPointerSize));
-  {
-    Label loop, done_loop;
-    __ SmiUntag(r1, r2);
-    __ LoadAndTestP(r1, r1);
-    __ beq(&done_loop);
-    __ bind(&loop);
-    __ lay(r4, MemOperand(r4, -kPointerSize));
-    __ LoadP(ip, MemOperand(r4));
-    __ la(r6, MemOperand(r6, kPointerSize));
-    __ StoreP(ip, MemOperand(r6));
-    __ BranchOnCount(r1, &loop);
-    __ bind(&done_loop);
-    __ AddP(r6, r6, Operand(kPointerSize));
-  }
-
-  // Setup the rest parameter array in r6.
-  __ LoadNativeContextSlot(Context::STRICT_ARGUMENTS_MAP_INDEX, r3);
-  __ StoreP(r3, MemOperand(r6, JSStrictArgumentsObject::kMapOffset));
-  __ LoadRoot(r3, Heap::kEmptyFixedArrayRootIndex);
-  __ StoreP(r3, MemOperand(r6, JSStrictArgumentsObject::kPropertiesOffset));
-  __ StoreP(r5, MemOperand(r6, JSStrictArgumentsObject::kElementsOffset));
-  __ StoreP(r2, MemOperand(r6, JSStrictArgumentsObject::kLengthOffset));
-  STATIC_ASSERT(JSStrictArgumentsObject::kSize == 4 * kPointerSize);
-  __ AddP(r2, r6, Operand(kHeapObjectTag));
-  __ Ret();
-
-  // Fall back to %AllocateInNewSpace (if not too big).
-  Label too_big_for_new_space;
-  __ bind(&allocate);
-  __ CmpP(r9, Operand(kMaxRegularHeapObjectSize));
-  __ bgt(&too_big_for_new_space);
-  {
-    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-    __ SmiTag(r9);
-    __ Push(r2, r4, r9);
-    __ CallRuntime(Runtime::kAllocateInNewSpace);
-    __ LoadRR(r5, r2);
-    __ Pop(r2, r4);
-  }
-  __ b(&done_allocate);
-
-  // Fall back to %NewStrictArguments.
-  __ bind(&too_big_for_new_space);
-  __ push(r3);
-  __ TailCallRuntime(Runtime::kNewStrictArguments);
-}
-
 static int AddressOffset(ExternalReference ref0, ExternalReference ref1) {
   return ref0.address() - ref1.address();
 }
 
 // Calls an API function.  Allocates HandleScope, extracts returned value
 // from handle and propagates exceptions.  Restores context.  stack_space
 // - space to be unwound on exit (includes the call JS arguments space and
 // the additional space allocated for the fast call).
 static void CallApiFunctionAndReturn(MacroAssembler* masm,
                                      Register function_address,
@@ skipping 333 matching lines @@
   CallApiFunctionAndReturn(masm, api_function_address, thunk_ref,
                            kStackUnwindSpace, NULL, return_value_operand, NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_S390