mirror of
https://review.haiku-os.org/buildtools
synced 2025-02-07 14:34:51 +01:00
f133d007f9
Old version was from 2012-05-06, 6.1.2 is from 2016-12-16 A lot of support for newer processors and speedups since then See gmp/NEWS for details
148 lines
3.4 KiB
NASM
148 lines
3.4 KiB
NASM
dnl SPARC v9 mpn_addlsh_n and mpn_sublsh_n for T3/T4/T5.
|
|
|
|
dnl Contributed to the GNU project by Torbjörn Granlund.
|
|
|
|
dnl Copyright 2013 Free Software Foundation, Inc.
|
|
|
|
dnl This file is part of the GNU MP Library.
|
|
dnl
|
|
dnl The GNU MP Library is free software; you can redistribute it and/or modify
|
|
dnl it under the terms of either:
|
|
dnl
|
|
dnl * the GNU Lesser General Public License as published by the Free
|
|
dnl Software Foundation; either version 3 of the License, or (at your
|
|
dnl option) any later version.
|
|
dnl
|
|
dnl or
|
|
dnl
|
|
dnl * the GNU General Public License as published by the Free Software
|
|
dnl Foundation; either version 2 of the License, or (at your option) any
|
|
dnl later version.
|
|
dnl
|
|
dnl or both in parallel, as here.
|
|
dnl
|
|
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 General Public License
|
|
dnl for more details.
|
|
dnl
|
|
dnl You should have received copies of the GNU General Public License and the
|
|
dnl GNU Lesser General Public License along with the GNU MP Library. If not,
|
|
dnl see https://www.gnu.org/licenses/.
|
|
|
|
include(`../config.m4')
|
|
|
|
C cycles/limb
|
|
C UltraSPARC T3: 11
|
|
C UltraSPARC T4: 4
|
|
|
|
C For sublsh_n we combine the two shifted limbs using xnor, using the identity
|
|
C (a xor not b) = (not (a xor b)) which equals (not (a or b)) when (a and b) =
|
|
C 0 as it is in our usage. This gives us the ones complement for free.
|
|
C Unfortunately, the same trick will not work for rsblsh_n, which will instead
|
|
C require a separate negation.
|
|
C
|
|
C FIXME: Add rsblsh_n to this file.
|
|
|
|
define(`rp', `%i0')
|
|
define(`up', `%i1')
|
|
define(`vp', `%i2')
|
|
define(`n', `%i3')
|
|
define(`cnt',`%i4')
|
|
|
|
define(`tnc',`%o5')
|
|
|
|
ifdef(`OPERATION_addlsh_n',`
|
|
define(`INITCY', `subcc %g0, 0, %g0')
|
|
define(`MERGE', `or')
|
|
define(`func', `mpn_addlsh_n')
|
|
')
|
|
ifdef(`OPERATION_sublsh_n',`
|
|
define(`INITCY', `subcc %g0, 1, %g0')
|
|
define(`MERGE', `xnor')
|
|
define(`func', `mpn_sublsh_n')
|
|
')
|
|
|
|
define(`rp0', `rp')
|
|
define(`rp1', `%o2')
|
|
define(`up0', `up')
|
|
define(`up1', `%o3')
|
|
define(`vp0', `vp')
|
|
define(`vp1', `%o4')
|
|
|
|
MULFUNC_PROLOGUE(mpn_addlsh_n mpn_sublsh_n)
|
|
ASM_START()
|
|
REGISTER(%g2,#scratch)
|
|
REGISTER(%g3,#scratch)
|
|
PROLOGUE(func)
|
|
save %sp, -176, %sp
|
|
mov 64, tnc
|
|
sub tnc, cnt, tnc
|
|
|
|
andcc n, 1, %g0
|
|
sllx n, 3, n
|
|
add n, -16, n
|
|
add up, n, up0
|
|
add vp, n, vp0
|
|
add rp, n, rp0
|
|
add up0, 8, up1
|
|
add vp0, 8, vp1
|
|
add rp0, -8, rp1
|
|
add rp0, -16, rp0
|
|
neg n, n
|
|
be L(evn)
|
|
INITCY
|
|
|
|
L(odd): ldx [vp0 + n], %l1
|
|
mov 0, %l2
|
|
ldx [up0 + n], %l5
|
|
sllx %l1, cnt, %g3
|
|
brgez n, L(wd1)
|
|
add n, 8, n
|
|
ldx [vp0 + n], %l0
|
|
b L(lo1)
|
|
sllx %l1, cnt, %g3
|
|
|
|
L(evn): ldx [vp0 + n], %l0
|
|
mov 0, %l3
|
|
ldx [up0 + n], %l4
|
|
ldx [vp1 + n], %l1
|
|
b L(lo0)
|
|
sllx %l0, cnt, %g1
|
|
|
|
L(top): addxccc(%l6, %l4, %o0)
|
|
ldx [vp0 + n], %l0
|
|
sllx %l1, cnt, %g3
|
|
stx %o0, [rp0 + n]
|
|
L(lo1): srlx %l1, tnc, %l3
|
|
MERGE %l2, %g3, %l7
|
|
ldx [up0 + n], %l4
|
|
addxccc(%l7, %l5, %o1)
|
|
ldx [vp1 + n], %l1
|
|
sllx %l0, cnt, %g1
|
|
stx %o1, [rp1 + n]
|
|
L(lo0): srlx %l0, tnc, %l2
|
|
MERGE %l3, %g1, %l6
|
|
ldx [up1 + n], %l5
|
|
brlz,pt n, L(top)
|
|
add n, 16, n
|
|
|
|
addxccc(%l6, %l4, %o0)
|
|
sllx %l1, cnt, %g3
|
|
stx %o0, [rp0 + n]
|
|
L(wd1): srlx %l1, tnc, %l3
|
|
MERGE %l2, %g3, %l7
|
|
addxccc(%l7, %l5, %o1)
|
|
stx %o1, [rp1 + n]
|
|
|
|
ifdef(`OPERATION_addlsh_n',
|
|
` addxc( %l3, %g0, %i0)')
|
|
ifdef(`OPERATION_sublsh_n',
|
|
` addxc( %g0, %g0, %g1)
|
|
add %g1, -1, %g1
|
|
sub %l3, %g1, %i0')
|
|
|
|
ret
|
|
restore
|
|
EPILOGUE()
|