1 /* MN10300 64-bit arithmetic right shift
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
11 #include <asm/cache.h>
14 .balign L1_CACHE_BYTES
16 ###############################################################################
18 # unsigned long long __ashrdi3(unsigned long long value [D1:D0],
19 # unsigned by [(12,SP)])
21 ###############################################################################
23 .type __ashrdi3,@function
32 # the count is in the range 1-31
36 sub a0,a1,a1 # a1 = 32 - count
37 asl a1,d1,a1 # get underflow from MSW -> LSW
39 or_asr a1,d0,a0,d1 # insert underflow into LSW and
43 .balign L1_CACHE_BYTES
44 # the count is in the range 32-63
47 ext d0 # sign-extend result through MDR
52 .size __ashrdi3, .-__ashrdi3