hppa: allocate membarrier system call number
[urcu.git] / urcu / arch / hppa.h
1 #ifndef _URCU_ARCH_HPPA_H
2 #define _URCU_ARCH_HPPA_H
3
4 /*
5 * arch/hppa.h: definitions for hppa architecture
6 *
7 * Copyright (c) 2014 Helge Deller <deller@gmx.de>
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #include <urcu/compiler.h>
25 #include <urcu/config.h>
26 #include <urcu/syscall-compat.h>
27
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31
32 #include <stdlib.h>
33 #include <sys/time.h>
34
35 /*
36 * On Linux, define the membarrier system call number if not yet available in
37 * the system headers.
38 */
39 #if (defined(__linux__) && !defined(__NR_membarrier))
40 #define __NR_membarrier 343
41 #endif
42
43 #define HAS_CAA_GET_CYCLES
44 typedef unsigned long caa_cycles_t;
45
46 static inline caa_cycles_t caa_get_cycles(void)
47 {
48 caa_cycles_t cycles;
49
50 asm volatile("mfctl 16, %0" : "=r" (cycles));
51 return cycles;
52 }
53
54 #ifdef __cplusplus
55 }
56 #endif
57
58 #include <urcu/arch/generic.h>
59
60 #endif /* _URCU_ARCH_HPPA_H */
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