mirror of
git://git.gnupg.org/gnupg.git
synced 2024-12-22 10:19:57 +01:00
124 lines
2.3 KiB
ArmAsm
124 lines
2.3 KiB
ArmAsm
/* Alpha sub_n -- Subtract two limb vectors of the same length > 0 and
|
|
* store difference in a third limb vector.
|
|
* Copyright (C) 1995, 1998,
|
|
* 2001 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GnuPG.
|
|
*
|
|
* GnuPG is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GnuPG 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
|
|
/*******************
|
|
* mpi_limb_t
|
|
* mpihelp_sub_n( mpi_ptr_t res_ptr, (r16)
|
|
* mpi_ptr_t s1_ptr, (r17)
|
|
* mpi_ptr_t s2_ptr, (r18)
|
|
* mpi_size_t size) (r19)
|
|
*/
|
|
|
|
.set noreorder
|
|
.set noat
|
|
.text
|
|
.align 3
|
|
.globl mpihelp_sub_n
|
|
.ent mpihelp_sub_n
|
|
mpihelp_sub_n:
|
|
.frame $30,0,$26,0
|
|
|
|
ldq $3,0($17)
|
|
ldq $4,0($18)
|
|
|
|
subq $19,1,$19
|
|
and $19,4-1,$2 # number of limbs in first loop
|
|
bis $31,$31,$0
|
|
beq $2,.L0 # if multiple of 4 limbs, skip first loop
|
|
|
|
subq $19,$2,$19
|
|
|
|
.Loop0: subq $2,1,$2
|
|
ldq $5,8($17)
|
|
addq $4,$0,$4
|
|
ldq $6,8($18)
|
|
cmpult $4,$0,$1
|
|
subq $3,$4,$4
|
|
cmpult $3,$4,$0
|
|
stq $4,0($16)
|
|
or $0,$1,$0
|
|
|
|
addq $17,8,$17
|
|
addq $18,8,$18
|
|
bis $5,$5,$3
|
|
bis $6,$6,$4
|
|
addq $16,8,$16
|
|
bne $2,.Loop0
|
|
|
|
.L0: beq $19,.Lend
|
|
|
|
.align 3
|
|
.Loop: subq $19,4,$19
|
|
|
|
ldq $5,8($17)
|
|
addq $4,$0,$4
|
|
ldq $6,8($18)
|
|
cmpult $4,$0,$1
|
|
subq $3,$4,$4
|
|
cmpult $3,$4,$0
|
|
stq $4,0($16)
|
|
or $0,$1,$0
|
|
|
|
ldq $3,16($17)
|
|
addq $6,$0,$6
|
|
ldq $4,16($18)
|
|
cmpult $6,$0,$1
|
|
subq $5,$6,$6
|
|
cmpult $5,$6,$0
|
|
stq $6,8($16)
|
|
or $0,$1,$0
|
|
|
|
ldq $5,24($17)
|
|
addq $4,$0,$4
|
|
ldq $6,24($18)
|
|
cmpult $4,$0,$1
|
|
subq $3,$4,$4
|
|
cmpult $3,$4,$0
|
|
stq $4,16($16)
|
|
or $0,$1,$0
|
|
|
|
ldq $3,32($17)
|
|
addq $6,$0,$6
|
|
ldq $4,32($18)
|
|
cmpult $6,$0,$1
|
|
subq $5,$6,$6
|
|
cmpult $5,$6,$0
|
|
stq $6,24($16)
|
|
or $0,$1,$0
|
|
|
|
addq $17,32,$17
|
|
addq $18,32,$18
|
|
addq $16,32,$16
|
|
bne $19,.Loop
|
|
|
|
.Lend: addq $4,$0,$4
|
|
cmpult $4,$0,$1
|
|
subq $3,$4,$4
|
|
cmpult $3,$4,$0
|
|
stq $4,0($16)
|
|
or $0,$1,$0
|
|
ret $31,($26),1
|
|
|
|
.end mpihelp_sub_n
|
|
|
|
|