mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
101 lines
2.0 KiB
ArmAsm
101 lines
2.0 KiB
ArmAsm
/* MIPS3 __mpn_lshift --
|
|
*
|
|
* Copyright (C) 1995-2024 Free Software Foundation, Inc.
|
|
*
|
|
* 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 Lesser General Public License as published by
|
|
* the Free Software Foundation; either version 2.1 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 Lesser General Public
|
|
* License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with the GNU MP Library. If not, see
|
|
* <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <sysdep.h>
|
|
#include <sys/asm.h>
|
|
|
|
/* INPUT PARAMETERS
|
|
* res_ptr $4
|
|
* src_ptr $5
|
|
* size $6
|
|
* cnt $7
|
|
*/
|
|
|
|
#ifdef __PIC__
|
|
.option pic2
|
|
#endif
|
|
ENTRY (__mpn_lshift)
|
|
#ifdef __PIC__
|
|
SETUP_GP /* ??? unused */
|
|
#endif
|
|
.set noreorder
|
|
.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,L(L0) # if multiple of 4 limbs, skip first loop
|
|
dsrl $2,$10,$13 # compute function result
|
|
|
|
dsubu $6,$6,$9
|
|
|
|
L(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,L(Loop0)
|
|
sd $8,0($4)
|
|
|
|
L(L0): beq $6,$0,L(Lend)
|
|
nop
|
|
|
|
L(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,L(Loop)
|
|
sd $8,0($4)
|
|
|
|
L(Lend): dsll $8,$10,$7
|
|
j $31
|
|
sd $8,-8($4)
|
|
END (__mpn_lshift)
|