mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
147 lines
3.1 KiB
ArmAsm
147 lines
3.1 KiB
ArmAsm
! SPARC __mpn_submul_1 -- Multiply a limb vector with a limb and subtract
|
|
! the result from a second limb vector.
|
|
|
|
! Copyright (C) 1992, 1993, 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 o0
|
|
! s1_ptr o1
|
|
! size o2
|
|
! s2_limb o3
|
|
|
|
#include "sysdep.h"
|
|
|
|
.text
|
|
.align 4
|
|
.global C_SYMBOL_NAME(__mpn_submul_1)
|
|
C_SYMBOL_NAME(__mpn_submul_1):
|
|
! Make S1_PTR and RES_PTR point at the end of their blocks
|
|
! and put (- 4 x SIZE) in index/loop counter.
|
|
sll %o2,2,%o2
|
|
add %o0,%o2,%o4 ! RES_PTR in o4 since o0 is retval
|
|
add %o1,%o2,%o1
|
|
sub %g0,%o2,%o2
|
|
|
|
cmp %o3,0xfff
|
|
bgu Large
|
|
nop
|
|
|
|
ld [%o1+%o2],%o5
|
|
mov 0,%o0
|
|
b L0
|
|
add %o4,-4,%o4
|
|
Loop0:
|
|
subcc %o5,%g1,%g1
|
|
ld [%o1+%o2],%o5
|
|
addx %o0,%g0,%o0
|
|
st %g1,[%o4+%o2]
|
|
L0: wr %g0,%o3,%y
|
|
sra %o5,31,%g2
|
|
and %o3,%g2,%g2
|
|
andcc %g1,0,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,%o5,%g1
|
|
mulscc %g1,0,%g1
|
|
sra %g1,20,%g4
|
|
sll %g1,12,%g1
|
|
rd %y,%g3
|
|
srl %g3,20,%g3
|
|
or %g1,%g3,%g1
|
|
|
|
addcc %g1,%o0,%g1
|
|
addx %g2,%g4,%o0 ! add sign-compensation and cy to hi limb
|
|
addcc %o2,4,%o2 ! loop counter
|
|
bne Loop0
|
|
ld [%o4+%o2],%o5
|
|
|
|
subcc %o5,%g1,%g1
|
|
addx %o0,%g0,%o0
|
|
retl
|
|
st %g1,[%o4+%o2]
|
|
|
|
|
|
Large: ld [%o1+%o2],%o5
|
|
mov 0,%o0
|
|
sra %o3,31,%g4 ! g4 = mask of ones iff S2_LIMB < 0
|
|
b L1
|
|
add %o4,-4,%o4
|
|
Loop:
|
|
subcc %o5,%g3,%g3
|
|
ld [%o1+%o2],%o5
|
|
addx %o0,%g0,%o0
|
|
st %g3,[%o4+%o2]
|
|
L1: wr %g0,%o5,%y
|
|
and %o5,%g4,%g2
|
|
andcc %g0,%g0,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%o3,%g1
|
|
mulscc %g1,%g0,%g1
|
|
rd %y,%g3
|
|
addcc %g3,%o0,%g3
|
|
addx %g2,%g1,%o0
|
|
addcc %o2,4,%o2
|
|
bne Loop
|
|
ld [%o4+%o2],%o5
|
|
|
|
subcc %o5,%g3,%g3
|
|
addx %o0,%g0,%o0
|
|
retl
|
|
st %g3,[%o4+%o2]
|