Bug 717863 default pagesize is 8192 on Solaris/SPARC r=igor

js/src/jsgc.h

@@ -91,7 +91,15 @@ struct Arena;
  */
 const size_t MAX_BACKGROUND_FINALIZE_KINDS = FINALIZE_LIMIT - FINALIZE_OBJECT_LIMIT / 2;
 
+/*
+ * Default pagesize is 8192 on Solaris SPARC.
+ * Do not use JS_CPU_SPARC here, this header is used outside JS.
+ */ 
+#if defined(SOLARIS) && (defined(__sparc) || defined(__sparcv9))
+const size_t ArenaShift = 13;
+#else
 const size_t ArenaShift = 12;
+#endif
 const size_t ArenaSize = size_t(1) << ArenaShift;
 const size_t ArenaMask = ArenaSize - 1;