--- a/hotspot/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp	Wed Jul 22 20:23:53 2015 +0300
+++ b/hotspot/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp	Fri Jul 17 07:50:36 2015 +0000
@@ -2306,6 +2306,28 @@
   }
 }
 
+Address MacroAssembler::spill_address(int size, int offset, Register tmp)
+{
+  assert(offset >= 0, "spill to negative address?");
+  // Offset reachable ?
+  //   Not aligned - 9 bits signed offset
+  //   Aligned - 12 bits unsigned offset shifted
+  Register base = sp;
+  if ((offset & (size-1)) && offset >= (1<<8)) {
+    add(tmp, base, offset & ((1<<12)-1));
+    base = tmp;
+    offset &= -1<<12;
+  }
+
+  if (offset >= (1<<12) * size) {
+    add(tmp, base, offset & (((1<<12)-1)<<12));
+    base = tmp;
+    offset &= ~(((1<<12)-1)<<12);
+  }
+
+  return Address(base, offset);
+}
+
 /**
  * Multiply 64 bit by 64 bit first loop.
  */