--- callback/trampoline_r/test1.c.orig	Sun Apr 26 06:46:30 2009
+++ callback/trampoline_r/test1.c	Sun Apr 26 06:46:30 2009
@@ -70,7 +70,7 @@ register void* env __asm__("%r29");
 register void* env __asm__("r12");
 #endif
 #ifdef __rs6000__
-#ifdef __NetBSD__
+#if defined(__NetBSD__) || defined(__OpenBSD__)
 register void* env __asm__("r13");
 #else
 register void* env __asm__("r11");