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dnl Intel Atom mpn_mul_1.
dnl Contributed to the GNU project by Torbjorn Granlund and Marco Bodrato.
dnl Copyright 2011 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 cycles/limb
C P5 -
C P6 model 0-8,10-12 -
C P6 model 9 (Banias)
C P6 model 13 (Dothan)
C P4 model 0 (Willamette)
C P4 model 1 (?)
C P4 model 2 (Northwood)
C P4 model 3 (Prescott)
C P4 model 4 (Nocona)
C Intel Atom 7.5
C AMD K6 -
C AMD K7 -
C AMD K8
C AMD K10
defframe(PARAM_CARRY,20)
defframe(PARAM_MUL, 16)
defframe(PARAM_SIZE, 12)
defframe(PARAM_SRC, 8)
defframe(PARAM_DST, 4)
define(`rp', `%edx')
define(`up', `%esi')
define(`n', `%ecx')
ASM_START()
TEXT
ALIGN(16)
deflit(`FRAME',0)
PROLOGUE(mpn_mul_1c)
movd PARAM_CARRY, %mm6 C carry
jmp L(ent)
EPILOGUE()
ALIGN(8) C for compact code
PROLOGUE(mpn_mul_1)
pxor %mm6, %mm6
L(ent): push %esi FRAME_pushl()
mov PARAM_SRC, up
mov PARAM_SIZE, %eax C size
movd PARAM_MUL, %mm7
movd (up), %mm0
mov %eax, n
and $3, %eax
pmuludq %mm7, %mm0
mov PARAM_DST, rp
jz L(lo0)
cmp $2, %eax
lea -16(up,%eax,4),up
lea -16(rp,%eax,4),rp
jc L(lo1)
jz L(lo2)
jmp L(lo3)
ALIGN(16)
L(top): movd (up), %mm0
pmuludq %mm7, %mm0
psrlq $32, %mm6
lea 16(rp), rp
L(lo0): paddq %mm0, %mm6
movd 4(up), %mm0
pmuludq %mm7, %mm0
movd %mm6, (rp)
psrlq $32, %mm6
L(lo3): paddq %mm0, %mm6
movd 8(up), %mm0
pmuludq %mm7, %mm0
movd %mm6, 4(rp)
psrlq $32, %mm6
L(lo2): paddq %mm0, %mm6
movd 12(up), %mm0
pmuludq %mm7, %mm0
movd %mm6, 8(rp)
psrlq $32, %mm6
L(lo1): paddq %mm0, %mm6
sub $4, n
movd %mm6, 12(rp)
lea 16(up), up
ja L(top)
psrlq $32, %mm6
movd %mm6, %eax
emms
pop %esi FRAME_popl()
ret
EPILOGUE()
ASM_END()
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