Annotation of OpenXM_contrib/gmp/mpn/hppa/hppa1_1/pa7100/lshift.s, Revision 1.1.1.1
1.1 maekawa 1: ; HP-PA __mpn_lshift --
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_lshift
32: __mpn_lshift
33: .proc
34: .callinfo frame=64,no_calls
35: .entry
36:
37: sh2add %r24,%r25,%r25
38: sh2add %r24,%r26,%r26
39: ldws,mb -4(0,%r25),%r22
40: subi 32,%r23,%r1
41: mtsar %r1
42: addib,= -1,%r24,L$0004
43: vshd %r0,%r22,%r28 ; compute carry out limb
44: ldws,mb -4(0,%r25),%r29
45: addib,<= -5,%r24,L$rest
46: vshd %r22,%r29,%r20
47:
48: L$loop ldws,mb -4(0,%r25),%r22
49: stws,mb %r20,-4(0,%r26)
50: vshd %r29,%r22,%r20
51: ldws,mb -4(0,%r25),%r29
52: stws,mb %r20,-4(0,%r26)
53: vshd %r22,%r29,%r20
54: ldws,mb -4(0,%r25),%r22
55: stws,mb %r20,-4(0,%r26)
56: vshd %r29,%r22,%r20
57: ldws,mb -4(0,%r25),%r29
58: stws,mb %r20,-4(0,%r26)
59: addib,> -4,%r24,L$loop
60: vshd %r22,%r29,%r20
61:
62: L$rest addib,= 4,%r24,L$end1
63: nop
64: L$eloop ldws,mb -4(0,%r25),%r22
65: stws,mb %r20,-4(0,%r26)
66: addib,<= -1,%r24,L$end2
67: vshd %r29,%r22,%r20
68: ldws,mb -4(0,%r25),%r29
69: stws,mb %r20,-4(0,%r26)
70: addib,> -1,%r24,L$eloop
71: vshd %r22,%r29,%r20
72:
73: L$end1 stws,mb %r20,-4(0,%r26)
74: vshd %r29,%r0,%r20
75: bv 0(%r2)
76: stw %r20,-4(0,%r26)
77: L$end2 stws,mb %r20,-4(0,%r26)
78: L$0004 vshd %r22,%r0,%r20
79: bv 0(%r2)
80: stw %r20,-4(0,%r26)
81:
82: .exit
83: .procend
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