Beginnings of syscall bits for PowerPC. These are no doubtedly wrong,

but it gets the build father and is in the right direction.

Partially obtained from:	NetBSD

lib/libc/powerpc/SYS.h

@@ -0,0 +1,43 @@
+/*-
+ * Copyright (c) 2002 David E. O'Brien.  All rights reserved.
+ *
+ * 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. Neither the name of the author nor the names of any contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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.
+ *
+ *	$NetBSD: SYS.h,v 1.8 2002/01/14 00:55:56 thorpej Exp $	*/
+ * $FreeBSD$
+ */
+
+#include <sys/syscall.h>
+#include <machine/asm.h>
+
+
+#define SYSCALL(x)							\
+	.text ;								\
+	.align	2 ;							\
+2:	b	PIC_PLT(_C_LABEL(__cerror)) ;				\
+ENTRY(__CONCAT(__sys_,x)) ;						\
+	li	0,(SYS_ ## x) ;						\
+	sc ;								\
+	bso	2b