mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
69 lines
1.6 KiB
ArmAsm
69 lines
1.6 KiB
ArmAsm
! Z8000 __mpn_mul_1 -- Multiply a limb vector with a limb and store
|
|
! the result in a second limb vector.
|
|
|
|
! Copyright (C) 1993, 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 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; see the file COPYING.LIB. If not, write to
|
|
! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
|
! MA 02111-1307, USA.
|
|
|
|
|
|
! INPUT PARAMETERS
|
|
! res_ptr r7
|
|
! s1_ptr r6
|
|
! size r5
|
|
! s2_limb r4
|
|
|
|
unseg
|
|
.text
|
|
even
|
|
global ___mpn_mul_1
|
|
___mpn_mul_1:
|
|
sub r2,r2 ! zero carry limb
|
|
and r4,r4
|
|
jr mi,Lneg
|
|
|
|
Lpos: pop r1,@r6
|
|
ld r9,r1
|
|
mult rr8,r4
|
|
and r1,r1 ! shift msb of loaded limb into cy
|
|
jr mi,Lp ! branch if loaded limb's msb is set
|
|
add r8,r4 ! hi_limb += sign_comp2
|
|
Lp: add r9,r2 ! lo_limb += cy_limb
|
|
xor r2,r2
|
|
adc r2,r8
|
|
ld @r7,r9
|
|
inc r7,#2
|
|
dec r5
|
|
jr ne,Lpos
|
|
ret t
|
|
|
|
Lneg: pop r1,@r6
|
|
ld r9,r1
|
|
mult rr8,r4
|
|
add r8,r1 ! hi_limb += sign_comp1
|
|
and r1,r1
|
|
jr mi,Ln
|
|
add r8,r4 ! hi_limb += sign_comp2
|
|
Ln: add r9,r2 ! lo_limb += cy_limb
|
|
xor r2,r2
|
|
adc r2,r8
|
|
ld @r7,r9
|
|
inc r7,#2
|
|
dec r5
|
|
jr ne,Lneg
|
|
ret t
|