mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 18:40:14 +00:00
59 lines
1.7 KiB
ArmAsm
59 lines
1.7 KiB
ArmAsm
|
; HP-PA __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
|
||
|
|
; store difference in a third limb vector.
|
||
|
|
|
||
|
|
; Copyright (C) 1992, 1994 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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
|
|
||
|
|
|
||
|
|
; INPUT PARAMETERS
|
||
|
|
; res_ptr gr26
|
||
|
|
; s1_ptr gr25
|
||
|
|
; s2_ptr gr24
|
||
|
|
; size gr23
|
||
|
|
|
||
|
|
; One might want to unroll this as for other processors, but it turns
|
||
|
|
; out that the data cache contention after a store makes such
|
||
|
|
; unrolling useless. We can't come under 5 cycles/limb anyway.
|
||
|
|
|
||
|
|
.code
|
||
|
|
.export __mpn_sub_n
|
||
|
|
__mpn_sub_n
|
||
|
|
.proc
|
||
|
|
.callinfo frame=0,no_calls
|
||
|
|
.entry
|
||
|
|
|
||
|
|
ldws,ma 4(0,%r25),%r20
|
||
|
|
ldws,ma 4(0,%r24),%r19
|
||
|
|
|
||
|
|
addib,= -1,%r23,L$end ; check for (SIZE == 1)
|
||
|
|
sub %r20,%r19,%r28 ; subtract first limbs ignoring cy
|
||
|
|
|
||
|
|
L$loop ldws,ma 4(0,%r25),%r20
|
||
|
|
ldws,ma 4(0,%r24),%r19
|
||
|
|
stws,ma %r28,4(0,%r26)
|
||
|
|
addib,<> -1,%r23,L$loop
|
||
|
|
subb %r20,%r19,%r28
|
||
|
|
|
||
|
|
L$end stws %r28,0(0,%r26)
|
||
|
|
addc %r0,%r0,%r28
|
||
|
|
bv 0(%r2)
|
||
|
|
subi 1,%r28,%r28
|
||
|
|
|
||
|
|
.exit
|
||
|
|
.procend
|