mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
55 lines
1.8 KiB
ArmAsm
55 lines
1.8 KiB
ArmAsm
# IBM POWER __mpn_add_n -- Add two limb vectors of equal, non-zero length.
|
|
|
|
# Copyright (C) 1992, 1994, 1995 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 r3
|
|
# s1_ptr r4
|
|
# s2_ptr r5
|
|
# size r6
|
|
|
|
.toc
|
|
.extern __mpn_add_n[DS]
|
|
.extern .__mpn_add_n
|
|
.csect [PR]
|
|
.align 2
|
|
.globl __mpn_add_n
|
|
.globl .__mpn_add_n
|
|
.csect __mpn_add_n[DS]
|
|
__mpn_add_n:
|
|
.long .__mpn_add_n, TOC[tc0], 0
|
|
.csect [PR]
|
|
.__mpn_add_n:
|
|
mtctr 6 # copy size into CTR
|
|
l 8,0(4) # load least significant s1 limb
|
|
l 0,0(5) # load least significant s2 limb
|
|
cal 3,-4(3) # offset res_ptr, it's updated before used
|
|
a 7,0,8 # add least significant limbs, set cy
|
|
bdz Lend # If done, skip loop
|
|
Loop: lu 8,4(4) # load s1 limb and update s1_ptr
|
|
lu 0,4(5) # load s2 limb and update s2_ptr
|
|
stu 7,4(3) # store previous limb in load latency slot
|
|
ae 7,0,8 # add new limbs with cy, set cy
|
|
bdn Loop # decrement CTR and loop back
|
|
Lend: st 7,4(3) # store ultimate result limb
|
|
lil 3,0 # load cy into ...
|
|
aze 3,3 # ... return value register
|
|
br
|