diff --git a/gdb/config/.Sanitize b/gdb/config/.Sanitize
index e279e7d661..697c808019 100644
--- a/gdb/config/.Sanitize
+++ b/gdb/config/.Sanitize
@@ -24,6 +24,7 @@ Things-to-keep:
 3b1.mh
 3b1.mt
 a29k-kern.mt
+a29k-udi.mt
 a29k.mt
 altos.mh
 altos.mt
diff --git a/gdb/config/a29k-udi.mt b/gdb/config/a29k-udi.mt
new file mode 100644
index 0000000000..b6d85b8e00
--- /dev/null
+++ b/gdb/config/a29k-udi.mt
@@ -0,0 +1,5 @@
+# Target: AMD 29000 on EB29K board over a serial line.
+TDEPFILES= exec.o am29k-pinsn.o remote-udi.o am29k-tdep.o yank.o udip2soc.o udr.o mini2udi.o
+TM_FILE= tm-29k.h
+# The following is for ../include/a.out.encap.h
+TM_CFLAGS = -Da29k -DREMOTE -DTARGET=TARGET_AM29K -DAMD_COFF