File: [local] / OpenXM_contrib / gmp / mpn / pa64 / Attic / umul_ppmm.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 Copyright 1999, 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 Optimizations:
dnl * Avoid skip instructions
dnl * Put carry-generating and carry-consuming insns consecutively
dnl * Don't allocate any stack, "home" positions for parameteters could be
dnl used.
include(`../config.m4')
define(`p0',`%r28')
define(`p1',`%r29')
define(`t32',`%r19')
define(`t0',`%r20')
define(`t1',`%r21')
define(`x',`%r22')
define(`m0',`%r23')
define(`m1',`%r24')
ifdef(`HAVE_ABI_2_0w',
` .level 2.0W
',` .level 2.0N
')
PROLOGUE(mpn_umul_ppmm)
ldo 128(%r30),%r30
ifdef(`HAVE_ABI_2_0w',
` std %r26,-64(%r30)
std %r25,-56(%r30)
copy %r24,%r31
',`
depd %r25,31,32,%r26
std %r26,-64(%r30)
depd %r23,31,32,%r24
std %r24,-56(%r30)
ldw -180(%r30),%r31
')
fldd -64(%r30),%fr4
fldd -56(%r30),%fr5
xmpyu %fr5R,%fr4R,%fr6
fstd %fr6,-128(%r30)
xmpyu %fr5R,%fr4L,%fr7
fstd %fr7,-120(%r30)
xmpyu %fr5L,%fr4R,%fr8
fstd %fr8,-112(%r30)
xmpyu %fr5L,%fr4L,%fr9
fstd %fr9,-104(%r30)
depdi,z 1,31,1,t32 C t32 = 2^32
ldd -128(%r30),p0 C lo = low 64 bit of product
ldd -120(%r30),m0 C m0 = mid0 64 bit of product
ldd -112(%r30),m1 C m1 = mid1 64 bit of product
ldd -104(%r30),p1 C hi = high 64 bit of product
add,l,*nuv m0,m1,x C x = m1+m0
add,l t32,p1,p1 C propagate carry to mid of p1
depd,z x,31,32,t0 C lo32(m1+m0)
add t0,p0,p0
extrd,u x,31,32,t1 C hi32(m1+m0)
add,dc t1,p1,p1
std p0,0(%r31) C store low half of product
ifdef(`HAVE_ABI_2_0w',
` copy p1,%r28 C return val in %r28
',` extrd,u p1,31,32,%r28 C return val in %r28,%r29
')
bve (%r2)
ldo -128(%r30),%r30
EPILOGUE(mpn_umul_ppmm)