dnl PowerPC-64 mpn_mul_1 -- Multiply a limb vector with a limb
and add
dnl the result to a second limb vector.
dnl Copyright 1999-2001, 2003, 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 POWER3/PPC630: ?
C POWER4/PPC970: 10
C INPUT PARAMETERS
C rp r3
C up r4
C n r5
C v r6,r7
or r7,r8
ASM_START()
PROLOGUE(mpn_mul_1)
ifdef(`BROKEN_LONGLONG_PARAM
',
` rldimi r8, r7, 32,0 C assemble vlimb from separate 32-bit arguments
mr r6, r8
',`
rldimi r7, r6, 32,0 C assemble vlimb from separate 32-bit arguments
mr r6, r7
')
li r7, 0 C cy_limb = 0
mtctr r5
addic r0, r0, 0
addi r3, r3, -8
addi r4, r4, -8
L(oop): ldu r0, 8(r4)
mulld r9, r0, r6
adde r12, r9, r7 C
add old high limb
and new low limb
srdi r5, r9, 32
srdi r11, r7, 32
adde r5, r5, r11 C
add high limb parts, set cy
mulhdu r7, r0, r6
stdu r12, 8(r3)
bdnz L(oop)
addze r4, r7
srdi r3, r4, 32
blr
EPILOGUE()
