Annotation of OpenXM_contrib/gmp/mpn/vax/rshift.s, Revision 1.1.1.1
1.1 maekawa 1: # VAX __gmpn_rshift -- right shift.
2:
3: # Copyright (C) 1999, 2000 Free Software Foundation, Inc.
4:
5: # This file is part of the GNU MP Library.
6:
7: # The GNU MP Library is free software; you can redistribute it and/or modify
8: # it under the terms of the GNU Lesser General Public License as published by
9: # the Free Software Foundation; either version 2.1 of the License, or (at your
10: # option) any later version.
11:
12: # The GNU MP Library is distributed in the hope that it will be useful, but
13: # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14: # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15: # License for more details.
16:
17: # You should have received a copy of the GNU Lesser General Public License
18: # along with the GNU MP Library; see the file COPYING.LIB. If not, write to
19: # the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20: # MA 02111-1307, USA.
21:
22:
23: # INPUT PARAMETERS
24: # rptr (sp + 4)
25: # sptr (sp + 8)
26: # size (sp + 12)
27: # cnt (sp + 16)
28: # r0=retval r1=size r2,r3=itmp r4,r5=otmp call-used registers
29: # r6=sptr r7=rptr r8=cnt r9 r10 r11 call-saved registers
30:
31: .text
32: .align 1
33: .globl ___gmpn_rshift
34: ___gmpn_rshift:
35: .word 0x1c0
36: movl 4(ap),r7
37: movl 8(ap),r6
38: movl 12(ap),r1
39: movl 16(ap),r8
40:
41: movl (r6)+,r2
42: subl3 r8,$32,r8
43: ashl r8,r2,r0
44: decl r1
45: jeql Lend
46:
47: Loop: movl (r6)+,r3
48: ashq r8,r2,r4
49: movl r5,(r7)+
50: movl r3,r2
51: jsobgtr r1,Loop
52:
53: Lend: clrl r3
54: ashq r8,r2,r4
55: movl r5,(r7)
56: ret
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