mirror of
git://git.gnupg.org/gnupg.git
synced 2024-11-04 20:38:50 +01:00
121 lines
2.6 KiB
ArmAsm
121 lines
2.6 KiB
ArmAsm
/* SuperSPARC __udiv_qrnnd division support, used from longlong.h.
|
|
* This is for SuperSPARC only, to compensate for its
|
|
* semi-functional udiv instruction.
|
|
*
|
|
* Copyright (C) 1993, 1994, 1996, 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
|
|
! rem_ptr i0
|
|
! n1 i1
|
|
! n0 i2
|
|
! d i3
|
|
|
|
#include "sysdep.h"
|
|
#undef ret /* Kludge for glibc */
|
|
|
|
.text
|
|
.align 8
|
|
LC0: .double 0r4294967296
|
|
LC1: .double 0r2147483648
|
|
|
|
.align 4
|
|
.global C_SYMBOL_NAME(__udiv_qrnnd)
|
|
C_SYMBOL_NAME(__udiv_qrnnd):
|
|
!#PROLOGUE# 0
|
|
save %sp,-104,%sp
|
|
!#PROLOGUE# 1
|
|
st %i1,[%fp-8]
|
|
ld [%fp-8],%f10
|
|
sethi %hi(LC0),%o7
|
|
fitod %f10,%f4
|
|
ldd [%o7+%lo(LC0)],%f8
|
|
cmp %i1,0
|
|
bge L248
|
|
mov %i0,%i5
|
|
faddd %f4,%f8,%f4
|
|
L248:
|
|
st %i2,[%fp-8]
|
|
ld [%fp-8],%f10
|
|
fmuld %f4,%f8,%f6
|
|
cmp %i2,0
|
|
bge L249
|
|
fitod %f10,%f2
|
|
faddd %f2,%f8,%f2
|
|
L249:
|
|
st %i3,[%fp-8]
|
|
faddd %f6,%f2,%f2
|
|
ld [%fp-8],%f10
|
|
cmp %i3,0
|
|
bge L250
|
|
fitod %f10,%f4
|
|
faddd %f4,%f8,%f4
|
|
L250:
|
|
fdivd %f2,%f4,%f2
|
|
sethi %hi(LC1),%o7
|
|
ldd [%o7+%lo(LC1)],%f4
|
|
fcmped %f2,%f4
|
|
nop
|
|
fbge,a L251
|
|
fsubd %f2,%f4,%f2
|
|
fdtoi %f2,%f2
|
|
st %f2,[%fp-8]
|
|
b L252
|
|
ld [%fp-8],%i4
|
|
L251:
|
|
fdtoi %f2,%f2
|
|
st %f2,[%fp-8]
|
|
ld [%fp-8],%i4
|
|
sethi %hi(-2147483648),%g2
|
|
xor %i4,%g2,%i4
|
|
L252:
|
|
umul %i3,%i4,%g3
|
|
rd %y,%i0
|
|
subcc %i2,%g3,%o7
|
|
subxcc %i1,%i0,%g0
|
|
be L253
|
|
cmp %o7,%i3
|
|
|
|
add %i4,-1,%i0
|
|
add %o7,%i3,%o7
|
|
st %o7,[%i5]
|
|
ret
|
|
restore
|
|
L253:
|
|
blu L246
|
|
mov %i4,%i0
|
|
add %i4,1,%i0
|
|
sub %o7,%i3,%o7
|
|
L246:
|
|
st %o7,[%i5]
|
|
ret
|
|
restore
|
|
|