Annotation of OpenXM_contrib/gmp/mpn/hppa/hppa1_1/pa7100/rshift.s, Revision 1.1.1.1
1.1 maekawa 1: ; HP-PA __mpn_rshift --
2: ; This is optimized for the PA7100, where is runs at 3.25 cycles/limb
3:
4: ; Copyright (C) 1992, 1994 Free Software Foundation, Inc.
5:
6: ; This file is part of the GNU MP Library.
7:
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.
12:
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.
17:
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 330, Boston,
21: ; MA 02111-1307, USA.
22:
23:
24: ; INPUT PARAMETERS
25: ; res_ptr gr26
26: ; s_ptr gr25
27: ; size gr24
28: ; cnt gr23
29:
30: .code
31: .export __mpn_rshift
32: __mpn_rshift
33: .proc
34: .callinfo frame=64,no_calls
35: .entry
36:
37: ldws,ma 4(0,%r25),%r22
38: mtsar %r23
39: addib,= -1,%r24,L$0004
40: vshd %r22,%r0,%r28 ; compute carry out limb
41: ldws,ma 4(0,%r25),%r29
42: addib,<= -5,%r24,L$rest
43: vshd %r29,%r22,%r20
44:
45: L$loop ldws,ma 4(0,%r25),%r22
46: stws,ma %r20,4(0,%r26)
47: vshd %r22,%r29,%r20
48: ldws,ma 4(0,%r25),%r29
49: stws,ma %r20,4(0,%r26)
50: vshd %r29,%r22,%r20
51: ldws,ma 4(0,%r25),%r22
52: stws,ma %r20,4(0,%r26)
53: vshd %r22,%r29,%r20
54: ldws,ma 4(0,%r25),%r29
55: stws,ma %r20,4(0,%r26)
56: addib,> -4,%r24,L$loop
57: vshd %r29,%r22,%r20
58:
59: L$rest addib,= 4,%r24,L$end1
60: nop
61: L$eloop ldws,ma 4(0,%r25),%r22
62: stws,ma %r20,4(0,%r26)
63: addib,<= -1,%r24,L$end2
64: vshd %r22,%r29,%r20
65: ldws,ma 4(0,%r25),%r29
66: stws,ma %r20,4(0,%r26)
67: addib,> -1,%r24,L$eloop
68: vshd %r29,%r22,%r20
69:
70: L$end1 stws,ma %r20,4(0,%r26)
71: vshd %r0,%r29,%r20
72: bv 0(%r2)
73: stw %r20,0(0,%r26)
74: L$end2 stws,ma %r20,4(0,%r26)
75: L$0004 vshd %r0,%r22,%r20
76: bv 0(%r2)
77: stw %r20,0(0,%r26)
78:
79: .exit
80: .procend
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>