$NetBSD: patch-dc,v 1.1 2013/06/17 12:43:28 wiz Exp $
--- mono/mini/mini-x86.h.orig	2010-10-05 22:59:29.000000000 +0300
+++ mono/mini/mini-x86.h	2010-10-07 18:35:56.000000000 +0300
@@ -51,7 +51,7 @@
 #endif /* __HAIKU__ */
 
 #if defined( __linux__) || defined(__sun) || defined(__APPLE__) || defined(__NetBSD__) || \
-       defined(__FreeBSD__) || defined(__OpenBSD__)
+       defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
 #define MONO_ARCH_USE_SIGACTION
 #endif
 
@@ -170,7 +170,7 @@
 	gboolean need_stack_frame;
 } MonoCompileArch;
 
-#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__) || defined(__DragonFly__)
 # define SC_EAX sc_eax
 # define SC_EBX sc_ebx
 # define SC_ECX sc_ecx