1997-06-21 02:06:13 +00:00
|
|
|
/* MIPS3 __mpn_lshift --
|
|
|
|
|
*
|
2000-04-21 16:37:58 +00:00
|
|
|
* Copyright (C) 1995, 2000 Free Software Foundation, Inc.
|
1997-06-21 02:06:13 +00:00
|
|
|
*
|
|
|
|
|
* This file is part of the GNU MP Library.
|
|
|
|
|
*
|
|
|
|
|
* The GNU MP Library is free software; you can redistribute it and/or modify
|
|
|
|
|
* it under the terms of the GNU Library General Public License as published by
|
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or (at your
|
|
|
|
|
* option) any later version.
|
|
|
|
|
*
|
|
|
|
|
* The GNU MP Library is distributed in the hope that it will be useful, but
|
|
|
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
|
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
|
|
|
|
|
* License for more details.
|
|
|
|
|
*
|
|
|
|
|
* You should have received a copy of the GNU Library General Public License
|
|
|
|
|
* along with the GNU MP Library; see the file COPYING.LIB. If not, write to
|
|
|
|
|
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
|
|
|
|
* MA 02111-1307, USA.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include <sysdep.h>
|
|
|
|
|
|
|
|
|
|
/* INPUT PARAMETERS
|
|
|
|
|
* res_ptr $4
|
|
|
|
|
* src_ptr $5
|
|
|
|
|
* size $6
|
|
|
|
|
* cnt $7
|
|
|
|
|
*/
|
|
|
|
|
|
2000-04-21 16:37:58 +00:00
|
|
|
#ifdef __PIC__
|
1997-06-21 02:06:13 +00:00
|
|
|
.option pic2
|
|
|
|
|
#endif
|
|
|
|
|
.text
|
|
|
|
|
.align 2
|
|
|
|
|
.globl __mpn_lshift
|
|
|
|
|
.ent __mpn_lshift
|
|
|
|
|
__mpn_lshift:
|
|
|
|
|
.set noreorder
|
2000-04-21 16:37:58 +00:00
|
|
|
#ifdef __PIC__
|
1997-06-21 02:06:13 +00:00
|
|
|
.cpload t9
|
|
|
|
|
#endif
|
|
|
|
|
.set nomacro
|
|
|
|
|
|
|
|
|
|
dsll $2,$6,3
|
|
|
|
|
daddu $5,$5,$2 # make r5 point at end of src
|
|
|
|
|
ld $10,-8($5) # load first limb
|
|
|
|
|
dsubu $13,$0,$7
|
|
|
|
|
daddu $4,$4,$2 # make r4 point at end of res
|
|
|
|
|
daddiu $6,$6,-1
|
|
|
|
|
and $9,$6,4-1 # number of limbs in first loop
|
|
|
|
|
beq $9,$0,.L0 # if multiple of 4 limbs, skip first loop
|
|
|
|
|
dsrl $2,$10,$13 # compute function result
|
|
|
|
|
|
|
|
|
|
dsubu $6,$6,$9
|
|
|
|
|
|
|
|
|
|
.Loop0: ld $3,-16($5)
|
|
|
|
|
daddiu $4,$4,-8
|
|
|
|
|
daddiu $5,$5,-8
|
|
|
|
|
daddiu $9,$9,-1
|
|
|
|
|
dsll $11,$10,$7
|
|
|
|
|
dsrl $12,$3,$13
|
|
|
|
|
move $10,$3
|
|
|
|
|
or $8,$11,$12
|
|
|
|
|
bne $9,$0,.Loop0
|
|
|
|
|
sd $8,0($4)
|
|
|
|
|
|
|
|
|
|
.L0: beq $6,$0,.Lend
|
|
|
|
|
nop
|
|
|
|
|
|
|
|
|
|
.Loop: ld $3,-16($5)
|
|
|
|
|
daddiu $4,$4,-32
|
|
|
|
|
daddiu $6,$6,-4
|
|
|
|
|
dsll $11,$10,$7
|
|
|
|
|
dsrl $12,$3,$13
|
|
|
|
|
|
|
|
|
|
ld $10,-24($5)
|
|
|
|
|
dsll $14,$3,$7
|
|
|
|
|
or $8,$11,$12
|
|
|
|
|
sd $8,24($4)
|
|
|
|
|
dsrl $9,$10,$13
|
|
|
|
|
|
|
|
|
|
ld $3,-32($5)
|
|
|
|
|
dsll $11,$10,$7
|
|
|
|
|
or $8,$14,$9
|
|
|
|
|
sd $8,16($4)
|
|
|
|
|
dsrl $12,$3,$13
|
|
|
|
|
|
|
|
|
|
ld $10,-40($5)
|
|
|
|
|
dsll $14,$3,$7
|
|
|
|
|
or $8,$11,$12
|
|
|
|
|
sd $8,8($4)
|
|
|
|
|
dsrl $9,$10,$13
|
|
|
|
|
|
|
|
|
|
daddiu $5,$5,-32
|
|
|
|
|
or $8,$14,$9
|
|
|
|
|
bgtz $6,.Loop
|
|
|
|
|
sd $8,0($4)
|
|
|
|
|
|
|
|
|
|
.Lend: dsll $8,$10,$7
|
|
|
|
|
j $31
|
|
|
|
|
sd $8,-8($4)
|
|
|
|
|
.end __mpn_lshift
|
