1 files changed, 58 insertions, 0 deletions
diff --git a/sysdeps/sparc64/add_n.S b/sysdeps/sparc64/add_n.S
new file mode 100644
index 0000000000..68bb008a7d
--- /dev/null
+++ b/sysdeps/sparc64/add_n.S
@@ -0,0 +1,58 @@
+/* SPARC v9 __mpn_add_n -- Add two limb vectors of the same length > 0 and
+   store sum in a third limb vector.
+  
+   Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+
+   This file is part of the GNU MP Library.
+
+   The GNU MP Library is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Library General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or (at your
+   option) any later version.
+
+   The GNU MP Library is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+   License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.  */
+
+
+#include <sysdep.h>
+
+
+/* INPUT PARAMETERS
+   res_ptr	%o0
+   s1_ptr	%o1
+   s2_ptr	%o2
+   size		%o3  */
+
+
+ENTRY(__mpn_add_n)
+
+	sub	%g0,%o3,%g3
+	sllx	%o3,3,%g1
+	add	%o1,%g1,%o1		! make s1_ptr point at end
+	add	%o2,%g1,%o2		! make s2_ptr point at end
+	add	%o0,%g1,%o0		! make res_ptr point at end
+	mov	0,%o4			! clear carry variable
+	sllx	%g3,3,%o5		! compute initial address index
+
+1:	ldx	[%o2+%o5],%g1		! load s2 limb
+	add	%g3,1,%g3		! increment loop count
+	ldx	[%o1+%o5],%g2		! load s1 limb
+	addcc	%g1,%o4,%g1		! add s2 limb and carry variable
+	movcc	%xcc,0,%o4		! if carry-out, o4 was 1; clear it
+	addcc	%g1,%g2,%g1		! add s1 limb to sum
+	stx	%g1,[%o0+%o5]		! store result
+	add	%o5,8,%o5		! increment address index
+	brnz,pt	%g3,1b
+	 movcs	%xcc,1,%o4		! if s1 add gave carry, record it
+
+	retl
+	 mov %o4,%o0
+
+END(__mpn_add_n)