mirror of
git://git.gnupg.org/gnupg.git
synced 2024-11-13 22:08:52 +01:00
70 lines
2.0 KiB
ArmAsm
70 lines
2.0 KiB
ArmAsm
|
/* SPARC v8 __mpn_submul_1 -- Multiply a limb vector with a limb and
|
||
|
|
* subtract the result from a second limb vector.
|
||
|
|
*
|
||
|
|
* Copyright (C) 1992, 1993, 1994, 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 2 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, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
||
|
|
*
|
||
|
|
* Note: This code is heavily based on the GNU MP Library.
|
||
|
|
* Actually it's the same code with only minor changes in the
|
||
|
|
* way the data is stored; this is to support the abstraction
|
||
|
|
* of an optional secure memory allocation which may be used
|
||
|
|
* to avoid revealing of sensitive data due to paging etc.
|
||
|
|
* The GNU MP Library itself is published under the LGPL;
|
||
|
|
* however I decided to publish this code under the plain GPL.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
! INPUT PARAMETERS
|
||
|
|
! res_ptr o0
|
||
|
|
! s1_ptr o1
|
||
|
|
! size o2
|
||
|
|
! s2_limb o3
|
||
|
|
|
||
|
|
#include "sysdep.h"
|
||
|
|
|
||
|
|
.text
|
||
|
|
.align 4
|
||
|
|
.global C_SYMBOL_NAME(mpihelp_submul_1)
|
||
|
|
C_SYMBOL_NAME(mpihelp_submul_1):
|
||
|
|
sub %g0,%o2,%o2 ! negate ...
|
||
|
|
sll %o2,2,%o2 ! ... and scale size
|
||
|
|
sub %o1,%o2,%o1 ! o1 is offset s1_ptr
|
||
|
|
sub %o0,%o2,%g1 ! g1 is offset res_ptr
|
||
|
|
|
||
|
|
mov 0,%o0 ! clear cy_limb
|
||
|
|
|
||
|
|
Loop: ld [%o1+%o2],%o4
|
||
|
|
ld [%g1+%o2],%g2
|
||
|
|
umul %o4,%o3,%o5
|
||
|
|
rd %y,%g3
|
||
|
|
addcc %o5,%o0,%o5
|
||
|
|
addx %g3,0,%o0
|
||
|
|
subcc %g2,%o5,%g2
|
||
|
|
addx %o0,0,%o0
|
||
|
|
st %g2,[%g1+%o2]
|
||
|
|
|
||
|
|
addcc %o2,4,%o2
|
||
|
|
bne Loop
|
||
|
|
nop
|
||
|
|
|
||
|
|
retl
|
||
|
|
nop
|
||
|
|
|
||
|
|
|