Xenomai  3.0.8
arith.h
1 /*
2  * Copyright (C) 2008 Philippe Gerum <rpm@xenomai.org>.
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13 
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
17  */
18 #ifndef _COBALT_POWERPC_ASM_UAPI_ARITH_H
19 #define _COBALT_POWERPC_ASM_UAPI_ARITH_H
20 
21 #include <asm/xenomai/uapi/features.h>
22 
23 #ifdef __powerpc64__
24 
25 #define xnarch_nodiv_ullimd(op, frac, integ) \
26  mach_powerpc_nodiv_ullimd((op), (frac), (integ))
27 
28 static inline __attribute__((__const__)) unsigned long long
29 mach_powerpc_nodiv_ullimd(const unsigned long long op,
30  const unsigned long long frac,
31  const unsigned rhs_integ)
32 {
33  unsigned long h, l, m;
34 
35  __asm__("mulhdu %0, %3, %4\n\t" \
36  "mulld %1, %3, %4\n\t" \
37  "rlwinm %2, %1, 0, 0, 0\n\t" \
38  "sldi %2, %2, 1\n\t" \
39  "addc %1, %1, %2\n\t" \
40  "addze %0, %0\n\t" \
41  "mr %2, %5\n\t" \
42  "clrldi %2, %2, 32\n\t" \
43  "mulld %2, %3, %2\n\t" \
44  "adde %0, %0, %2\n\t" \
45  : "=&r"(h), "=&r"(l), "=&r"(m) \
46  : "r"(op), "r"(frac), "r"(rhs_integ) : "cc"); \
47 
48  return h;
49 }
50 
51 #else /* !__powerpc64__ */
52 
53 #define xnarch_add96and64(l0, l1, l2, s0, s1) \
54  do { \
55  __asm__ ("addc %2, %2, %4\n\t" \
56  "adde %1, %1, %3\n\t" \
57  "addze %0, %0\n\t" \
58  : "+r"(l0), "+r"(l1), "+r"(l2) \
59  : "r"(s0), "r"(s1) : "cc"); \
60  } while (0)
61 
62 #endif /* !__powerpc64__ */
63 
64 #include <cobalt/uapi/asm-generic/arith.h>
65 
66 #endif /* _COBALT_POWERPC_ASM_UAPI_ARITH_H */