diff --git a/sys/arch/sparc/sparc/kgdb_proto.h b/sys/arch/sparc/sparc/kgdb_proto.h
deleted file mode 100644
index 8d1869a3a47c..000000000000
--- a/sys/arch/sparc/sparc/kgdb_proto.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*	$NetBSD: kgdb_proto.h,v 1.4 1996/05/16 15:57:19 abrown Exp $ */
-
-/*
- * Copyright (c) 1992, 1993
- *	The Regents of the University of California.  All rights reserved.
- * Copyright (c) 1995
- *	The President and Fellows of Harvard College. All rights reserved.
- *
- * This software was developed by the Computer Systems Engineering group
- * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
- * contributed to Berkeley.
- *
- * All advertising materials mentioning features or use of this software
- * must display the following acknowledgements:
- *	This product includes software developed by the University of
- *	California, Lawrence Berkeley Laboratory.
- *
- *	This product includes software developed by Harvard University.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *	@(#)kgdb_proto.h	8.1 (Berkeley) 6/11/93
- */
-
-/*
- * Message types.
- */
-#define KGDB_MEM_R	0x01
-#define KGDB_MEM_W	0x02
-#define KGDB_REG_R	0x03
-#define KGDB_REG_W	0x04
-#define KGDB_CONT	0x05
-#define KGDB_STEP	0x06
-#define KGDB_KILL	0x07
-#define KGDB_SIGNAL	0x08
-#define KGDB_EXEC	0x09
-#define KGDB_HALT       0x0a
-#define KGDB_BOOT       0x0b
-
-#define KGDB_CMD(x) ((x) & 0x0f)
-
-/*
- * Message flags.
- */
-#define KGDB_ACK	0x80
-#define KGDB_DELTA	0x40
-#define KGDB_MORE	0x20
-#define KGDB_SEQ	0x10