[builtins] Construct builtin frame in String/Number ctors

src/arm/macro-assembler-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.
 
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 1266 matching lines @@
     frame_ends = pc_offset();
     ldm(ia_w, sp, pp.bit() | fp.bit() | lr.bit());
   } else {
     mov(sp, fp);
     frame_ends = pc_offset();
     ldm(ia_w, sp, fp.bit() | lr.bit());
   }
   return frame_ends;
 }
 
+void MacroAssembler::EnterBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Push(lr, fp, context, target);
+  add(fp, sp, Operand(2 * kPointerSize));
+  Push(argc);
+}
+
+void MacroAssembler::LeaveBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Pop(argc);
+  Pop(lr, fp, context, target);
+}
+
 void MacroAssembler::EnterExitFrame(bool save_doubles, int stack_space,
                                     StackFrame::Type frame_type) {
   DCHECK(frame_type == StackFrame::EXIT ||
          frame_type == StackFrame::BUILTIN_EXIT);
 
   // Set up the frame structure on the stack.
   DCHECK_EQ(2 * kPointerSize, ExitFrameConstants::kCallerSPDisplacement);
   DCHECK_EQ(1 * kPointerSize, ExitFrameConstants::kCallerPCOffset);
   DCHECK_EQ(0 * kPointerSize, ExitFrameConstants::kCallerFPOffset);
   mov(ip, Operand(Smi::FromInt(frame_type)));
@@ skipping 2726 matching lines @@
     }
   }
   if (mag.shift > 0) mov(result, Operand(result, ASR, mag.shift));
   add(result, result, Operand(dividend, LSR, 31));
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM