[PATCH 1/1] Adjust fallback definition of DBREG_DRX for netbsd

[coypu <coypu@sdf.org>]

This was originally inteded for freebsd~=5. freebsd has since moved
to the definition here, including the rename dr0->dr.

netbsd now uses the same definitions as freebsd, including the use
of dr instead of dr0, but doesn't provide this macro.
---
 gdb/x86-bsd-nat.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/gdb/x86-bsd-nat.c b/gdb/x86-bsd-nat.c
index 2ff661c1..81bd0ad1 100644
--- a/gdb/x86-bsd-nat.c
+++ b/gdb/x86-bsd-nat.c
@@ -51,10 +51,9 @@ x86bsd_mourn_inferior (struct target_ops *ops)
   super_mourn_inferior (ops);
 }
 
-/* Not all versions of FreeBSD/i386 that support the debug registers
-   have this macro.  */
+/* NetBSD doesn't provide a definition of this macro */
 #ifndef DBREG_DRX
-#define DBREG_DRX(d, x) ((&d->dr0)[x])
+#define DBREG_DRX(d,x)  ((d)->dr[(x)])
 #endif
 
 static unsigned long
-- 
2.12.2