1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
dnl S/390-64 mpn_mul_1
dnl Copyright 2011 Free Software Foundation, Inc.
dnl This file is part of the GNU MP Library.
dnl The GNU MP Library is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU Lesser General Public License as published
dnl by the Free Software Foundation; either version 3 of the License, or (at
dnl your option) any later version.
dnl The GNU MP Library is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
dnl License for more details.
dnl You should have received a copy of the GNU Lesser General Public License
dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
include(`../config.m4')
C cycles/limb
C z900 29
C z990 22
C z9 ?
C z10 ?
C z196 ?
C INPUT PARAMETERS
define(`rp', `%r2')
define(`up', `%r3')
define(`n', `%r4')
define(`v0', `%r5')
ASM_START()
PROLOGUE(mpn_mul_1)
stmg %r11, %r12, 88(%r15)
lghi %r12, 0 C zero index register
aghi %r12, 0 C clear carry flag
lghi %r11, 0 C clear carry limb
L(top): lg %r1, 0(%r12,up)
mlgr %r0, v0
alcgr %r1, %r11
lgr %r11, %r0 C copy high part to carry limb
stg %r1, 0(%r12,rp)
la %r12, 8(%r12)
brctg n, L(top)
lghi %r2, 0
alcgr %r2, %r11
lmg %r11, %r12, 88(%r15)
br %r14
EPILOGUE()
|
