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dnl x86 mpn_mul_1 (for 386, 486, and Pentium Pro) -- Multiply a limb vector
dnl with a limb and store the result in a second limb vector.
dnl Copyright 1992, 1994, 1997-2002, 2005 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 P5 12.5
C P6 model 0-8,10-12 5.5
C P6 model 9 (Banias)
C P6 model 13 (Dothan) 5.25
C P4 model 0 (Willamette) 19.0
C P4 model 1 (?) 19.0
C P4 model 2 (Northwood) 19.0
C P4 model 3 (Prescott)
C P4 model 4 (Nocona)
C AMD K6 10.5
C AMD K7 4.5
C AMD K8
C mp_limb_t mpn_mul_1 (mp_ptr dst, mp_srcptr src, mp_size_t size,
C mp_limb_t multiplier);
defframe(PARAM_MULTIPLIER,16)
defframe(PARAM_SIZE, 12)
defframe(PARAM_SRC, 8)
defframe(PARAM_DST, 4)
TEXT
ALIGN(8)
PROLOGUE(mpn_mul_1)
deflit(`FRAME',0)
pushl %edi
pushl %esi
pushl %ebx
pushl %ebp
deflit(`FRAME',16)
movl PARAM_DST,%edi
movl PARAM_SRC,%esi
movl PARAM_SIZE,%ecx
xorl %ebx,%ebx
andl $3,%ecx
jz L(end0)
L(oop0):
movl (%esi),%eax
mull PARAM_MULTIPLIER
leal 4(%esi),%esi
addl %ebx,%eax
movl $0,%ebx
adcl %ebx,%edx
movl %eax,(%edi)
movl %edx,%ebx C propagate carry into cylimb
leal 4(%edi),%edi
decl %ecx
jnz L(oop0)
L(end0):
movl PARAM_SIZE,%ecx
shrl $2,%ecx
jz L(end)
ALIGN(8)
L(oop): movl (%esi),%eax
mull PARAM_MULTIPLIER
addl %eax,%ebx
movl $0,%ebp
adcl %edx,%ebp
movl 4(%esi),%eax
mull PARAM_MULTIPLIER
movl %ebx,(%edi)
addl %eax,%ebp C new lo + cylimb
movl $0,%ebx
adcl %edx,%ebx
movl 8(%esi),%eax
mull PARAM_MULTIPLIER
movl %ebp,4(%edi)
addl %eax,%ebx C new lo + cylimb
movl $0,%ebp
adcl %edx,%ebp
movl 12(%esi),%eax
mull PARAM_MULTIPLIER
movl %ebx,8(%edi)
addl %eax,%ebp C new lo + cylimb
movl $0,%ebx
adcl %edx,%ebx
movl %ebp,12(%edi)
leal 16(%esi),%esi
leal 16(%edi),%edi
decl %ecx
jnz L(oop)
L(end): movl %ebx,%eax
popl %ebp
popl %ebx
popl %esi
popl %edi
ret
EPILOGUE()
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