1 files changed, 91 insertions, 0 deletions
diff --git a/sysdeps/mips/rshift.s b/sysdeps/mips/rshift.s
new file mode 100644
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+++ b/sysdeps/mips/rshift.s
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+ # MIPS2 __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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+ # INPUT PARAMETERS
+ # res_ptr	$4
+ # src_ptr	$5
+ # size		$6
+ # cnt		$7
+
+	.text
+	.align	2
+	.globl	__mpn_rshift
+	.ent	__mpn_rshift
+__mpn_rshift:
+	.set	noreorder
+	.set	nomacro
+
+	lw	$10,0($5)	# load first limb
+	subu	$13,$0,$7
+	addiu	$6,$6,-1
+	and	$9,$6,4-1	# number of limbs in first loop
+	beq	$9,$0,.L0	# if multiple of 4 limbs, skip first loop
+	 sll	$2,$10,$13	# compute function result
+
+	subu	$6,$6,$9
+
+.Loop0:	lw	$3,4($5)
+	addiu	$4,$4,4
+	addiu	$5,$5,4
+	addiu	$9,$9,-1
+	srl	$11,$10,$7
+	sll	$12,$3,$13
+	move	$10,$3
+	or	$8,$11,$12
+	bne	$9,$0,.Loop0
+	 sw	$8,-4($4)
+
+.L0:	beq	$6,$0,.Lend
+	 nop
+
+.Loop:	lw	$3,4($5)
+	addiu	$4,$4,16
+	addiu	$6,$6,-4
+	srl	$11,$10,$7
+	sll	$12,$3,$13
+
+	lw	$10,8($5)
+	srl	$14,$3,$7
+	or	$8,$11,$12
+	sw	$8,-16($4)
+	sll	$9,$10,$13
+
+	lw	$3,12($5)
+	srl	$11,$10,$7
+	or	$8,$14,$9
+	sw	$8,-12($4)
+	sll	$12,$3,$13
+
+	lw	$10,16($5)
+	srl	$14,$3,$7
+	or	$8,$11,$12
+	sw	$8,-8($4)
+	sll	$9,$10,$13
+
+	addiu	$5,$5,16
+	or	$8,$14,$9
+	bgtz	$6,.Loop
+	 sw	$8,-4($4)
+
+.Lend:	srl	$8,$10,$7
+	j	$31
+	sw	$8,0($4)
+	.end	__mpn_rshift