$NetBSD: patch-md_h,v 1.1 2012/12/17 01:58:55 dholland Exp $

Add amd64 support on NetBSD by cribbing from existing OpenBSD support.

--- md.h~	2007-03-14 02:53:10.000000000 +0000
+++ md.h
@@ -482,6 +482,8 @@ 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   6
 #else
 #error Unknown CPU architecture
 #endif