1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/powerpc/rshift.s b/sysdeps/powerpc/rshift.s
new file mode 100644
index 0000000000..20f09ad86a
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+++ b/sysdeps/powerpc/rshift.s
@@ -0,0 +1,59 @@
+# PowerPC-32 __mpn_rshift --
+
+# Copyright (C) 1995 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.
+
+
+# INPUT PARAMETERS
+# res_ptr	r3
+# s1_ptr	r4
+# size		r5
+# cnt		r6
+
+	.align 3
+	.globl __mpn_rshift
+	.type	 __mpn_rshift,@function
+__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	Lend1
+
+Loop:	lwzu	10,4(4)
+	srw	9,11,6
+	slw	12,10,8
+	or	9,9,12
+	stwu	9,4(7)
+	bdz	Lend2
+	lwzu	11,4(4)
+	srw	9,10,6
+	slw	12,11,8
+	or	9,9,12
+	stwu	9,4(7)
+	bdnz	Loop
+
+Lend1:	srw	0,11,6
+	stw	0,4(7)
+	blr
+
+Lend2:	srw	0,10,6
+	stw	0,4(7)
+	blr