56 lines
1.6 KiB
NASM
56 lines
1.6 KiB
NASM
dnl PowerPC-64 mpn_mul_1 -- Multiply a limb vector with a limb and store
|
|
dnl the result in a second limb vector.
|
|
|
|
dnl Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
|
|
|
|
dnl This file is part of the GNU MP Library.
|
|
|
|
dnl The GNU MP Library is free software; you can redistribute it and/or modify
|
|
dnl it under the terms of the GNU Lesser General Public License as published by
|
|
dnl the Free Software Foundation; either version 2.1 of the License, or (at your
|
|
dnl option) any later version.
|
|
|
|
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 Lesser General Public
|
|
dnl License for more details.
|
|
|
|
dnl You should have received a copy of the GNU Lesser General Public License
|
|
dnl along with the GNU MP Library; see the file COPYING.LIB. If not, write
|
|
dnl to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
dnl Boston, MA 02110-1301, USA.
|
|
|
|
include(`../config.m4')
|
|
|
|
C INPUT PARAMETERS
|
|
C res_ptr r3
|
|
C s1_ptr r4
|
|
C size r5
|
|
C s2_limb r6
|
|
C cy_limb r7
|
|
|
|
C PPC630: 6 to 18 cycles/limb, depending on multiplier. This cannot be
|
|
C improved unless floating-point operations are used instead of the slow
|
|
C mulld/mulhdu.
|
|
|
|
ASM_START()
|
|
PROLOGUE(mpn_mul_1)
|
|
li r7,0 C cy_limb = 0
|
|
|
|
PROLOGUE(mpn_mul_1c)
|
|
mtctr r5
|
|
addic r0,r0,0
|
|
addi r3, r3, -8
|
|
addi r4, r4, -8
|
|
L(top): ldu r0,8(r4)
|
|
mulld r9,r0,r6
|
|
adde r9,r9,r7
|
|
mulhdu r7,r0,r6
|
|
stdu r9,8(r3)
|
|
bdnz L(top)
|
|
|
|
addze r3,r7
|
|
blr
|
|
EPILOGUE(mpn_mul_1)
|
|
EPILOGUE(mpn_mul_1c)
|