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+/* Shift a limb right, low level routine.
+ Copyright (C) 1995, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C 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 C 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 C 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 r3
+ s1_ptr r4
+ size r5
+ cnt r6 */
+
+ENTRY(__mpn_rshift)
+ mtctr 5 # copy size into CTR
+ addi 7,3,-4 # move adjusted res_ptr to free return reg
+ subfic 8,6,32
+ lwz 11,0(4) # load first s1 limb
+ slw 3,11,8 # compute function return value
+ bdz 1f
+
+0: lwzu 10,4(4)
+ srw 9,11,6
+ slw 12,10,8
+ or 9,9,12
+ stwu 9,4(7)
+ bdz 2f
+ lwzu 11,4(4)
+ srw 9,10,6
+ slw 12,11,8
+ or 9,9,12
+ stwu 9,4(7)
+ bdnz 0b
+
+1: srw 0,11,6
+ stw 0,4(7)
+ blr
+
+2: srw 0,10,6
+ stw 0,4(7)
+ blr
+END(__mpn_rshift)