diff options
Diffstat (limited to 'gmp-6.3.0/mpn/sparc64/ultrasparct3/aorslsh_n.asm')
| -rw-r--r-- | gmp-6.3.0/mpn/sparc64/ultrasparct3/aorslsh_n.asm | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/gmp-6.3.0/mpn/sparc64/ultrasparct3/aorslsh_n.asm b/gmp-6.3.0/mpn/sparc64/ultrasparct3/aorslsh_n.asm new file mode 100644 index 0000000..1014b1b --- /dev/null +++ b/gmp-6.3.0/mpn/sparc64/ultrasparct3/aorslsh_n.asm @@ -0,0 +1,147 @@ +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() |