From 68b7efaadb1b6045a56277ea62d324c20ac0b633 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 12 Feb 2014 06:54:57 -0800
Subject: Relocate alpha from ports to libc

Also fixed the following whitespace nits to satisfy the push:

sysdeps/alpha/alphaev6/memset.S:142: space before tab in indent.
sysdeps/alpha/configure:1: new blank line at EOF.
sysdeps/alpha/fpu/e_sqrt.c:126: space before tab in indent.
sysdeps/alpha/preconfigure:1: new blank line at EOF.
sysdeps/unix/sysv/linux/alpha/syscalls.list:1: new blank line at EOF.
---
 sysdeps/alpha/udiv_qrnnd.S | 159 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 159 insertions(+)
 create mode 100644 sysdeps/alpha/udiv_qrnnd.S

(limited to 'sysdeps/alpha/udiv_qrnnd.S')

diff --git a/sysdeps/alpha/udiv_qrnnd.S b/sysdeps/alpha/udiv_qrnnd.S
new file mode 100644
index 0000000000..7c6682e55a
--- /dev/null
+++ b/sysdeps/alpha/udiv_qrnnd.S
@@ -0,0 +1,159 @@
+ # Alpha 21064 __udiv_qrnnd
+
+ # Copyright (C) 1992-2014 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 Lesser General Public License as published by
+ # the Free Software Foundation; either version 2.1 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 Lesser General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU Lesser General Public License
+ # along with the GNU MP Library.  If not, see <http://www.gnu.org/licenses/>.
+
+#include <sysdep.h>
+
+        .set noreorder
+        .set noat
+
+	.text
+
+LEAF(__udiv_qrnnd, 0)
+#ifdef PROF
+	ldgp	gp, 0(pv)
+	lda	AT, _mcount
+	jsr	AT, (AT), _mcount
+	.prologue 1
+#else
+        .prologue 0
+#endif
+
+#define cnt	$2
+#define tmp	$3
+#define rem_ptr	$16
+#define n1	$17
+#define n0	$18
+#define d	$19
+#define qb	$20
+
+	ldiq	cnt,16
+	blt	d,$largedivisor
+
+$loop1:	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	d,n1,qb
+	subq	n1,d,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	d,n1,qb
+	subq	n1,d,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	d,n1,qb
+	subq	n1,d,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	d,n1,qb
+	subq	n1,d,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	subq	cnt,1,cnt
+	bgt	cnt,$loop1
+	stq	n1,0(rem_ptr)
+	bis	$31,n0,$0
+	ret	$31,($26),1
+
+$largedivisor:
+	and	n0,1,$4
+
+	srl	n0,1,n0
+	sll	n1,63,tmp
+	or	tmp,n0,n0
+	srl	n1,1,n1
+
+	and	d,1,$6
+	srl	d,1,$5
+	addq	$5,$6,$5
+
+$loop2:	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	$5,n1,qb
+	subq	n1,$5,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	$5,n1,qb
+	subq	n1,$5,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	$5,n1,qb
+	subq	n1,$5,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	$5,n1,qb
+	subq	n1,$5,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	subq	cnt,1,cnt
+	bgt	cnt,$loop2
+
+	addq	n1,n1,n1
+	addq	$4,n1,n1
+	bne	$6,$Odd
+	stq	n1,0(rem_ptr)
+	bis	$31,n0,$0
+	ret	$31,($26),1
+
+$Odd:
+	/* q' in n0. r' in n1 */
+	addq	n1,n0,n1
+
+	cmpult	n1,n0,tmp	# tmp := carry from addq
+	subq	n1,d,AT
+	addq	n0,tmp,n0
+	cmovne	tmp,AT,n1
+
+	cmpult	n1,d,tmp
+	addq	n0,1,AT
+	cmoveq	tmp,AT,n0
+	subq	n1,d,AT
+	cmoveq	tmp,AT,n1
+
+	stq	n1,0(rem_ptr)
+	bis	$31,n0,$0
+	ret	$31,($26),1
+
+	.end	__udiv_qrnnd
-- 
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