loongson2f pagesize is 16384 
       liushiwei@gmail.com   
       2012-12-07

--- iceweasel-17.0.orig/js/src/gc/Heap.h	2012-12-06 02:13:50.729632056 +0800
+++ iceweasel-17.0/js/src/gc/Heap.h	2012-12-06 02:15:05.602630426 +0800
@@ -110,6 +110,8 @@
  */
 #if defined(SOLARIS) && (defined(__sparc) || defined(__sparcv9))
 const size_t PageShift = 13;
+#elif defined(__mips__)
+const size_t PageShift = 14;
 #else
 const size_t PageShift = 12;
 #endif