X87: [builtins] Construct builtin frame in String/Number ctors.

src/x87/macro-assembler-x87.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_X87
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 1060 matching lines @@
 
 void MacroAssembler::LeaveFrame(StackFrame::Type type) {
   if (emit_debug_code()) {
     cmp(Operand(ebp, CommonFrameConstants::kContextOrFrameTypeOffset),
         Immediate(Smi::FromInt(type)));
     Check(equal, kStackFrameTypesMustMatch);
   }
   leave();
 }
 
+void MacroAssembler::EnterBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Push(ebp);
+  Move(ebp, esp);
+  Push(context);
+  Push(target);
+  Push(argc);
+}
+
+void MacroAssembler::LeaveBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Pop(argc);
+  Pop(target);
+  Pop(context);
+  leave();
+}
+
 void MacroAssembler::EnterExitFramePrologue(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);
   push(ebp);
   mov(ebp, esp);
@@ skipping 2193 matching lines @@
   mov(eax, dividend);
   shr(eax, 31);
   add(edx, eax);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87