$NetBSD: patch-md_h,v 1.2 2015/04/18 20:41:44 joerg Exp $

Support for NetBSD/amd64 and NetBSD/arm.

--- md.h~	2007-03-14 02:53:10.000000000 +0000
+++ md.h
@@ -482,6 +482,10 @@ extern void _st_md_cxt_restore(jmp_buf e
 #define MD_JB_SP   0
 #elif defined(__vax__)
 #define MD_JB_SP   2
+#elif defined(__amd64__)
+#define MD_JB_SP   _JB_RSP
+#elif defined(__arm__)
+#define MD_JB_SP   _JB_REG_R13
 #else
 #error Unknown CPU architecture
 #endif