[builtins] Construct builtin frame in String/Number ctors

src/arm64/macro-assembler-arm64.cc

 // Copyright 2013 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_ARM64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 2805 matching lines @@
 
   int offset = ExitFrameConstants::kLastExitFrameField;
   while (!saved_fp_regs.IsEmpty()) {
     const CPURegister& dst0 = saved_fp_regs.PopHighestIndex();
     const CPURegister& dst1 = saved_fp_regs.PopHighestIndex();
     offset -= 2 * kDRegSize;
     Ldp(dst1, dst0, MemOperand(fp, offset));
   }
 }
 
+void MacroAssembler::EnterBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Push(lr, fp, context, target);
+  add(fp, jssp, Operand(2 * kPointerSize));
+  Push(argc);
+}
+
+void MacroAssembler::LeaveBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Pop(argc);
+  Pop(target, context, fp, lr);
+}
+
 void MacroAssembler::EnterExitFrame(bool save_doubles, const Register& scratch,
                                     int extra_space,
                                     StackFrame::Type frame_type) {
   DCHECK(jssp.Is(StackPointer()));
   DCHECK(frame_type == StackFrame::EXIT ||
          frame_type == StackFrame::BUILTIN_EXIT);
 
   // Set up the new stack frame.
   Push(lr, fp);
   Mov(fp, StackPointer());
@@ skipping 2302 matching lines @@
 }
 
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64