File: [local] / OpenXM_contrib / gmp / mpn / hppa / hppa2_0 / Attic / add_n.s (download)
Revision 1.1.1.1 (vendor branch), Sat Sep 9 14:12:30 2000 UTC (24 years ago) by maekawa
Branch: GMP
CVS Tags: maekawa-ipv6, VERSION_3_1_1, VERSION_3_1, RELEASE_1_2_2, RELEASE_1_2_1, RELEASE_1_1_3 Changes since 1.1: +0 -0
lines
Import gmp 3.1
|
; HP-PA 2.0 32-bit __gmpn_add_n -- Add two limb vectors of the same length > 0
; and store sum in a third limb vector.
; Copyright (C) 1997, 1998, 2000 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 gr26
; s1_ptr gr25
; s2_ptr gr24
; size gr23
; This runs at 2 cycles/limb on PA8000.
.code
.export __gmpn_add_n
__gmpn_add_n
.proc
.callinfo frame=0,no_calls
.entry
sub %r0,%r23,%r22
zdep %r22,30,3,%r28 ; r28 = 2 * (-n & 7)
zdep %r22,29,3,%r22 ; r22 = 4 * (-n & 7)
sub %r25,%r22,%r25 ; offset s1_ptr
sub %r24,%r22,%r24 ; offset s2_ptr
sub %r26,%r22,%r26 ; offset res_ptr
blr %r28,%r0 ; branch into loop
add %r0,%r0,%r0 ; reset carry
L$loop ldw 0(%r25),%r20
ldw 0(%r24),%r31
addc %r20,%r31,%r20
stw %r20,0(%r26)
L$7 ldw 4(%r25),%r21
ldw 4(%r24),%r19
addc %r21,%r19,%r21
stw %r21,4(%r26)
L$6 ldw 8(%r25),%r20
ldw 8(%r24),%r31
addc %r20,%r31,%r20
stw %r20,8(%r26)
L$5 ldw 12(%r25),%r21
ldw 12(%r24),%r19
addc %r21,%r19,%r21
stw %r21,12(%r26)
L$4 ldw 16(%r25),%r20
ldw 16(%r24),%r31
addc %r20,%r31,%r20
stw %r20,16(%r26)
L$3 ldw 20(%r25),%r21
ldw 20(%r24),%r19
addc %r21,%r19,%r21
stw %r21,20(%r26)
L$2 ldw 24(%r25),%r20
ldw 24(%r24),%r31
addc %r20,%r31,%r20
stw %r20,24(%r26)
L$1 ldw 28(%r25),%r21
ldo 32(%r25),%r25
ldw 28(%r24),%r19
addc %r21,%r19,%r21
stw %r21,28(%r26)
ldo 32(%r24),%r24
addib,> -8,%r23,L$loop
ldo 32(%r26),%r26
bv (%r2)
.exit
addc %r0,%r0,%r28
.procend