Move all files into ports/ subdirectory in preparation for merge with glibc glibc-2.16-ports-before-merge

1 files changed, 90 insertions, 0 deletions

diff --git a/ports/sysdeps/alpha/submul_1.S b/ports/sysdeps/alpha/submul_1.S
new file mode 100644
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+++ b/ports/sysdeps/alpha/submul_1.S
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+ # Alpha 21064 __mpn_submul_1 -- Multiply a limb vector with a limb and
+ # subtract the result from a second limb vector.
+
+ # Copyright (C) 1992, 1994, 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 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/>.
+
+
+ # INPUT PARAMETERS
+ # res_ptr	r16
+ # s1_ptr	r17
+ # size		r18
+ # s2_limb	r19
+
+ # This code runs at 42 cycles/limb on EV4 and 18 cycles/limb on EV5.
+
+	.set	noreorder
+	.set	noat
+.text
+	.align	3
+	.globl	__mpn_submul_1
+	.ent	__mpn_submul_1 2
+__mpn_submul_1:
+	.frame	$30,0,$26
+
+	ldq	$2,0($17)	# $2 = s1_limb
+	addq	$17,8,$17	# s1_ptr++
+	subq	$18,1,$18	# size--
+	mulq	$2,$19,$3	# $3 = prod_low
+	ldq	$5,0($16)	# $5 = *res_ptr
+	umulh	$2,$19,$0	# $0 = prod_high
+	beq	$18,.Lend1	# jump if size was == 1
+	ldq	$2,0($17)	# $2 = s1_limb
+	addq	$17,8,$17	# s1_ptr++
+	subq	$18,1,$18	# size--
+	subq	$5,$3,$3
+	cmpult	$5,$3,$4
+	stq	$3,0($16)
+	addq	$16,8,$16	# res_ptr++
+	beq	$18,.Lend2	# jump if size was == 2
+
+	.align	3
+.Loop:	mulq	$2,$19,$3	# $3 = prod_low
+	ldq	$5,0($16)	# $5 = *res_ptr
+	addq	$4,$0,$0	# cy_limb = cy_limb + 'cy'
+	subq	$18,1,$18	# size--
+	umulh	$2,$19,$4	# $4 = cy_limb
+	ldq	$2,0($17)	# $2 = s1_limb
+	addq	$17,8,$17	# s1_ptr++
+	addq	$3,$0,$3	# $3 = cy_limb + prod_low
+	cmpult	$3,$0,$0	# $0 = carry from (cy_limb + prod_low)
+	subq	$5,$3,$3
+	cmpult	$5,$3,$5
+	stq	$3,0($16)
+	addq	$16,8,$16	# res_ptr++
+	addq	$5,$0,$0	# combine carries
+	bne	$18,.Loop
+
+.Lend2:	mulq	$2,$19,$3	# $3 = prod_low
+	ldq	$5,0($16)	# $5 = *res_ptr
+	addq	$4,$0,$0	# cy_limb = cy_limb + 'cy'
+	umulh	$2,$19,$4	# $4 = cy_limb
+	addq	$3,$0,$3	# $3 = cy_limb + prod_low
+	cmpult	$3,$0,$0	# $0 = carry from (cy_limb + prod_low)
+	subq	$5,$3,$3
+	cmpult	$5,$3,$5
+	stq	$3,0($16)
+	addq	$5,$0,$0	# combine carries
+	addq	$4,$0,$0	# cy_limb = prod_high + cy
+	ret	$31,($26),1
+.Lend1:	subq	$5,$3,$3
+	cmpult	$5,$3,$5
+	stq	$3,0($16)
+	addq	$0,$5,$0
+	ret	$31,($26),1
+
+	.end	__mpn_submul_1