Architecture-specific setjump()/longjmp() bits for the PowerPC

needed by the loader.

Submitted by:	Benno Rice <benno@jeamland.net>
Obtained from:	NetBSD (Wolfgang Solfrank <ws@@tools.de>)

lib/libstand/powerpc/_setjmp.S

@@ -0,0 +1,39 @@
+/*	$NetBSD: _setjmp.S,v 1.1 1997/03/29 20:55:53 thorpej Exp $	*/
+/* $FreeBSD$ */
+
+#include <machine/asm.h>
+
+#if defined(LIBC_SCCS)
+	.text
+	.asciz "$NetBSD: _setjmp.S,v 1.1 1997/03/29 20:55:53 thorpej Exp $"
+#endif
+
+/*
+ * C library -- _setjmp, _longjmp
+ *
+ *	_longjmp(a,v)
+ * will generate a "return(v?v:1)" from the last call to
+ *	_setjmp(a)
+ * by restoring registers from the stack.
+ * The previous signal state is NOT restored.
+ */
+
+ENTRY(_setjmp)
+	mflr	11
+	mfcr	12
+	mr	10,1
+	mr	9,2
+	stmw	9,8(3)
+	li	3,0
+	blr
+
+ENTRY(_longjmp)
+	lmw	9,8(3)
+	mtlr	11
+	mtcr	12
+	mr	2,9
+	mr	1,10
+	or.	3,4,4
+	bnelr
+	li	3,1
+	blr