1 ; HP-PA __mpn_sub_n
-- Subtract two limb vectors of the same length
> 0 and
2 ; store difference in
a third limb vector.
4 ; Copyright
(C
) 1992, 1994 Free Software Foundation
, Inc.
6 ; This file is part of the GNU MP Library.
8 ; The GNU MP Library is free software; you can redistribute it
and/or modify
9 ; it under the terms of the GNU Library General Public License as published by
10 ; the Free Software Foundation; either version
2 of the License
, or (at your
11 ; option
) any later version.
13 ; The GNU MP Library is distributed in the hope that it will
be useful
, but
14 ; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 ;
or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU Library General Public
16 ; License for more details.
18 ; You should have received
a copy of the GNU Library General Public License
19 ; along with the GNU MP Library; see the file COPYING.LIB. If
not, write to
20 ; the Free Software Foundation
, Inc.
, 59 Temple Place
- Suite
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,
30 ; One might want to unroll this as for other processors
, but it turns
31 ; out that the data cache contention after
a store makes such
32 ; unrolling useless. We can
't come under 5 cycles/limb anyway.
38 .callinfo frame=0,no_calls
41 ldws,ma 4(0,%r25),%r20
42 ldws,ma 4(0,%r24),%r19
44 addib,= -1,%r23,L$end ; check for (SIZE == 1)
45 sub %r20,%r19,%r28 ; subtract first limbs ignoring cy
47 L$loop ldws,ma 4(0,%r25),%r20
48 ldws,ma 4(0,%r24),%r19
49 stws,ma %r28,4(0,%r26)
50 addib,<> -1,%r23,L$loop
53 L$end stws %r28,0(0,%r26)