1/* RTEMS threads compatibility routines for libgcc2 and libobjc.
2   by: Rosimildo da Silva( rdasilva@connecttel.com ) */
3/* Compile this one with gcc.  */
4/* Copyright (C) 1997-2015 Free Software Foundation, Inc.
5
6This file is part of GCC.
7
8GCC is free software; you can redistribute it and/or modify it under
9the terms of the GNU General Public License as published by the Free
10Software Foundation; either version 3, or (at your option) any later
11version.
12
13GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14WARRANTY; without even the implied warranty of MERCHANTABILITY or
15FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16for more details.
17
18Under Section 7 of GPL version 3, you are granted additional
19permissions described in the GCC Runtime Library Exception, version
203.1, as published by the Free Software Foundation.
21
22You should have received a copy of the GNU General Public License and
23a copy of the GCC Runtime Library Exception along with this program;
24see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
25<http://www.gnu.org/licenses/>.  */
26
27#ifndef GCC_GTHR_RTEMS_H
28#define GCC_GTHR_RTEMS_H
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34#define __GTHREADS 1
35
36#define __GTHREAD_ONCE_INIT  0
37#define __GTHREAD_MUTEX_INIT_FUNCTION  rtems_gxx_mutex_init
38#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION  rtems_gxx_recursive_mutex_init
39
40/* Avoid dependency on rtems specific headers.  */
41typedef void *__gthread_key_t;
42typedef int   __gthread_once_t;
43typedef void *__gthread_mutex_t;
44typedef void *__gthread_recursive_mutex_t;
45
46/*
47 * External functions provided by RTEMS. They are very similar to their POSIX
48 * counterparts. A "Wrapper API" is being use to avoid dependency on any RTEMS
49 * header files.
50 */
51
52/* generic per task variables */
53extern int rtems_gxx_once (__gthread_once_t *__once, void (*__func) (void));
54extern int rtems_gxx_key_create (__gthread_key_t *__key, void (*__dtor) (void *));
55extern int rtems_gxx_key_delete (__gthread_key_t __key);
56extern void *rtems_gxx_getspecific (__gthread_key_t __key);
57extern int rtems_gxx_setspecific (__gthread_key_t __key, const void *__ptr);
58
59/* mutex support */
60extern void rtems_gxx_mutex_init (__gthread_mutex_t *__mutex);
61extern int rtems_gxx_mutex_destroy (__gthread_mutex_t *__mutex);
62extern int rtems_gxx_mutex_lock (__gthread_mutex_t *__mutex);
63extern int rtems_gxx_mutex_trylock (__gthread_mutex_t *__mutex);
64extern int rtems_gxx_mutex_unlock (__gthread_mutex_t *__mutex);
65
66/* recursive mutex support */
67extern void rtems_gxx_recursive_mutex_init (__gthread_recursive_mutex_t *__mutex);
68extern int rtems_gxx_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex);
69extern int rtems_gxx_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex);
70extern int rtems_gxx_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex);
71
72/* RTEMS threading is always active */
73static inline int
74__gthread_active_p (void)
75{
76  return 1;
77}
78
79/* Wrapper calls */
80static inline int
81__gthread_once (__gthread_once_t *__once, void (*__func) (void))
82{
83   return rtems_gxx_once( __once, __func );
84}
85
86static inline int
87__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
88{
89  return rtems_gxx_key_create( __key, __dtor );
90}
91
92static inline int
93__gthread_key_delete (__gthread_key_t __key)
94{
95  return rtems_gxx_key_delete (__key);
96}
97
98static inline void *
99__gthread_getspecific (__gthread_key_t __key)
100{
101  return rtems_gxx_getspecific (__key);
102}
103
104static inline int
105__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
106{
107  return rtems_gxx_setspecific (__key, __ptr);
108}
109
110static inline int
111__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
112{
113  return rtems_gxx_mutex_destroy (__mutex);
114}
115
116static inline int
117__gthread_mutex_lock (__gthread_mutex_t *__mutex)
118{
119    return rtems_gxx_mutex_lock (__mutex);
120}
121
122static inline int
123__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
124{
125    return rtems_gxx_mutex_trylock (__mutex);
126}
127
128static inline int
129__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
130{
131    return rtems_gxx_mutex_unlock( __mutex );
132}
133
134static inline int
135__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
136{
137    return rtems_gxx_recursive_mutex_lock (__mutex);
138}
139
140static inline int
141__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
142{
143    return rtems_gxx_recursive_mutex_trylock (__mutex);
144}
145
146static inline int
147__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
148{
149    return rtems_gxx_recursive_mutex_unlock( __mutex );
150}
151
152static inline int
153__gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex)
154{
155  /* This requires that recursive and non-recursive mutexes have the same
156     representation.  */
157    return rtems_gxx_mutex_destroy (__mutex );
158}
159
160#ifdef __cplusplus
161}
162#endif
163
164#endif /* ! GCC_GTHR_RTEMS_H */
165