(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

1 files changed, 104 insertions, 0 deletions

diff --git a/sysdeps/hppa/hppa1.1/addmul_1.s b/sysdeps/hppa/hppa1.1/addmul_1.s
new file mode 100644
index 0000000000..a1fb083a83
--- /dev/null
+++ b/sysdeps/hppa/hppa1.1/addmul_1.s
@@ -0,0 +1,104 @@
+;! HP-PA-1.1 __mpn_addmul_1 -- Multiply a limb vector with a limb and
+;! add the result to a second limb vector.
+
+;! Copyright (C) 1992, 1993, 1994 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; 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	r26
+;! s1_ptr	r25
+;! size		r24
+;! s2_limb	r23
+
+;! This runs at 11 cycles/limb on a PA7000.  With the used instructions, it
+;! can not become faster due to data cache contention after a store.  On the
+;! PA7100 it runs at 10 cycles/limb, and that can not be improved either,
+;! since only the xmpyu does not need the integer pipeline, so the only
+;! dual-issue we will get are addc+xmpyu.  Unrolling could gain a cycle/limb
+;! on the PA7100.
+
+;! There are some ideas described in mul_1.s that applies to this code too.
+
+	.text
+	.export		__mpn_addmul_1
+__mpn_addmul_1:	
+	.proc
+	.callinfo	frame=64,no_calls
+	.entry
+
+	ldo		64(%r30),%r30
+	fldws,ma	4(%r25),%fr5
+	stw		%r23,-16(%r30)		;! move s2_limb ...
+	addib,=		-1,%r24,L$just_one_limb
+	 fldws		-16(%r30),%fr4		;! ... into fr4
+	add		%r0,%r0,%r0		;! clear carry
+	xmpyu		%fr4,%fr5,%fr6
+	fldws,ma	4(%r25),%fr7
+	fstds		%fr6,-16(%r30)
+	xmpyu		%fr4,%fr7,%fr8
+	ldw		-12(%r30),%r20		;! least significant limb in product
+	ldw		-16(%r30),%r28
+
+	fstds		%fr8,-16(%r30)
+	addib,=		-1,%r24,L$end
+	 ldw		-12(%r30),%r1
+
+;! Main loop
+L$loop:	
+	ldws		0(%r26),%r29
+	fldws,ma	4(%r25),%fr5
+	add		%r29,%r20,%r20
+	stws,ma		%r20,4(%r26)
+	addc		%r28,%r1,%r20
+	xmpyu		%fr4,%fr5,%fr6
+	ldw		-16(%r30),%r28
+	fstds		%fr6,-16(%r30)
+	addc		%r0,%r28,%r28
+	addib,<>	-1,%r24,L$loop
+	 ldw		-12(%r30),%r1
+
+L$end:		
+	ldw		0(%r26),%r29
+	add		%r29,%r20,%r20
+	stws,ma		%r20,4(%r26)
+	addc		%r28,%r1,%r20
+	ldw		-16(%r30),%r28
+	ldws		0(%r26),%r29
+	addc		%r0,%r28,%r28
+	add		%r29,%r20,%r20
+	stws,ma		%r20,4(%r26)
+	addc		%r0,%r28,%r28
+	bv		0(%r2)
+	ldo		-64(%r30),%r30
+
+L$just_one_limb:	
+	xmpyu		%fr4,%fr5,%fr6
+	ldw		0(%r26),%r29
+	fstds		%fr6,-16(%r30)
+	ldw		-12(%r30),%r1
+	ldw		-16(%r30),%r28
+	add		%r29,%r1,%r20
+	stw		%r20,0(%r26)
+	addc		%r0,%r28,%r28
+	bv		0(%r2)
+	 ldo		-64(%r30),%r30
+
+	.exit
+	.procend