File: [local] / OpenXM_contrib / gmp / mpn / pa64 / Attic / lshift.asm (download)
Revision 1.1.1.1 (vendor branch), Mon Aug 25 16:06:23 2003 UTC (20 years, 11 months ago) by ohara
Branch: GMP
CVS Tags: VERSION_4_1_2, RELEASE_1_2_3, RELEASE_1_2_2_KNOPPIX_b, RELEASE_1_2_2_KNOPPIX Changes since 1.1: +0 -0
lines
Import gmp 4.1.2
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dnl HP-PA 2.0 mpn_lshift -- Left shift.
dnl Copyright 1997, 2000, 2002 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 by
dnl the Free Software Foundation; either version 2.1 of the License, or (at your
dnl 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; see the file COPYING.LIB. If not, write to
dnl the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
dnl MA 02111-1307, USA.
dnl This runs at 1.5 cycles/limb on PA8000 and 1.0 cycles/limb on PA8500.
include(`../config.m4')
dnl INPUT PARAMETERS
define(`rp',`%r26')
define(`up',`%r25')
define(`n',`%r24')
define(`cnt',`%r23')
ifdef(`HAVE_ABI_2_0w',
` .level 2.0W
',` .level 2.0N
')
PROLOGUE(mpn_lshift)
shladd n, 3, up, up
shladd n, 3, rp, rp
subi 64, cnt, cnt
mtsar cnt
ldd -8(up), %r21
addib,= -1, n, L(end)
shrpd %r0, %r21, %sar, %r29 C compute carry out limb
depw,z n, 31, 3, %r28 C r28 = (size & 7)
sub %r0, n, %r22
depw,z %r22, 28, 3, %r22 C r22 = 8 * (-size & 7)
add up, %r22, up C offset up
blr %r28, %r0 C branch into jump table
add rp, %r22, rp C offset rp
b L(0)
nop
b L(1)
copy %r21, %r20
b L(2)
nop
b L(3)
copy %r21, %r20
b L(4)
nop
b L(5)
copy %r21, %r20
b L(6)
nop
b L(7)
copy %r21, %r20
L(loop)
L(0) ldd -16(up), %r20
shrpd %r21, %r20, %sar, %r21
std %r21, -8(rp)
L(7) ldd -24(up), %r21
shrpd %r20, %r21, %sar, %r20
std %r20, -16(rp)
L(6) ldd -32(up), %r20
shrpd %r21, %r20, %sar, %r21
std %r21, -24(rp)
L(5) ldd -40(up), %r21
shrpd %r20, %r21, %sar, %r20
std %r20, -32(rp)
L(4) ldd -48(up), %r20
shrpd %r21, %r20, %sar, %r21
std %r21, -40(rp)
L(3) ldd -56(up), %r21
shrpd %r20, %r21, %sar, %r20
std %r20, -48(rp)
L(2) ldd -64(up), %r20
shrpd %r21, %r20, %sar, %r21
std %r21, -56(rp)
L(1) ldd -72(up), %r21
ldo -64(up), up
shrpd %r20, %r21, %sar, %r20
std %r20, -64(rp)
addib,> -8, n, L(loop)
ldo -64(rp), rp
L(end) shrpd %r21, %r0, %sar, %r21
std %r21, -8(rp)
bve (%r2)
ifdef(`HAVE_ABI_2_0w',
` copy %r29,%r28
',` extrd,u %r29, 31, 32, %r28
')
EPILOGUE(mpn_lshift)