Mercurial > sdl-ios-xcode

annotate include/SDL_atomic.h @ 3186:51750b7a966f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
indent
author Sam Lantinga <slouken@libsdl.org>
date Wed, 10 Jun 2009 13:34:20 +0000
parents 030899df1af5
children e041d2c603fe
rev   line source
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
1 /*
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
2 SDL - Simple DirectMedia Layer
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
3 Copyright (C) 1997-2006 Sam Lantinga
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
4
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
5 This library is free software; you can redistribute it and/or
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
6 modify it under the terms of the GNU Lesser General Public
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
7 License as published by the Free Software Foundation; either
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
8 version 2.1 of the License, or (at your option) any later version.
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
9
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
10 This library is distributed in the hope that it will be useful,
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
13 Lesser General Public License for more details.
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
14
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
15 You should have received a copy of the GNU Lesser General Public
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
16 License along with this library; if not, write to the Free Software
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
18
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
19 Sam Lantinga
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
20 slouken@libsdl.org
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
21 */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
22
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
23 /**
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
24 * \file SDL_atomic.h
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
25 *
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
26 * Atomic int and pointer magic
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
27 */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
28
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
29 #ifndef _SDL_atomic_h_
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
30 #define _SDL_atomic_h_
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
31
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
32
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
33 #include "SDL_stdinc.h"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
34 #include "SDL_platform.h"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
35
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
36 #include "begin_code.h"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
37
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
38 /* Set up for C function definitions, even when using C++ */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
39 #ifdef __cplusplus
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
40 /* *INDENT-OFF* */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
41 extern "C" {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
42 /* *INDENT-ON* */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
43 #endif
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
44
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
45 #if defined(__GNUC__) && (defined(i386) || defined(__i386__) || defined(__x86_64__))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
46 static __inline__ void
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
47 SDL_atomic_int_add(volatile int *atomic, int value)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
48 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
49 __asm__ __volatile__("lock;" "addl %1, %0":"=m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
50 :"ir"(value), "m"(*atomic));
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
51 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
52
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
53 static __inline__ int
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
54 SDL_atomic_int_xchg_add(volatile int *atomic, int value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
55 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
56 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
57 __asm__ __volatile__("lock;" "xaddl %0, %1":"=r"(rv), "=m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
58 :"0"(value), "m"(*atomic));
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
59 return rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
60 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
61
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
62 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
63 SDL_atomic_int_cmp_xchg(volatile int *atomic, int oldvalue, int newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
64 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
65 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
66 __asm__ __volatile__("lock;" "cmpxchgl %2, %1":"=a"(rv), "=m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
67 :"r"(newvalue), "m"(*atomic), "0"(oldvalue));
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
68 return (SDL_bool) (rv == oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
69 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
70
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
71 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
72 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
73 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
74 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
75 void *rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
76 __asm__ __volatile__("lock;"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
77 # if defined(__x86_64__)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
78 "cmpxchgq %q2, %1"
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
79 # else
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
80 "cmpxchgl %2, %1"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
81 # endif
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
82 :"=a"(rv), "=m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
83 :"r"(newvalue), "m"(*atomic), "0"(oldvalue));
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
84 return (SDL_bool) (rv == oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
85 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
86 #elif defined(__GNUC__) && defined(__alpha__)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
87 # define ATOMIC_MEMORY_BARRIER (__asm__ __volatile__ ("mb" : : : "memory"))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
88 # define ATOMIC_INT_CMP_XCHG(atomic,value) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
89 ({ \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
90 int rv,prev; \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
91 __asm__ __volatile__(" mb\n" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
92 "1: ldl_l %0,%2\n" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
93 " cmpeq %0,%3,%1\n" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
94 " beq %1,2f\n" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
95 " mov %4,%1\n" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
96 " stl_c %1,%2\n" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
97 " beq %1,1b\n" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
98 " mb\n" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
99 "2:" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
100 : "=&r" (prev), \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
101 "=&r" (rv) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
102 : "m" (*(atomic)), \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
103 "Ir" (oldvalue), \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
104 "Ir" (newvalue) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
105 : "memory"); \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
106 (rv != 0); \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
107 })
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
108
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
109 # if (SIZEOF_VOIDP == 4)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
110 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
111 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
112 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
113 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
114 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
115 void *prev;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
116 __asm__ __volatile__(" mb\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
117 "1: ldl_l %0,%2\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
118 " cmpeq %0,%3,%1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
119 " beq $1,2f\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
120 " mov %4,%1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
121 " stl_c %1,%2\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
122 " beq %1,1b\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
123 " mb\n" "2:":"=&r"(prev), "=&r"(rv)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
124 :"m"(*atomic), "Ir"(oldvalue), "Ir"(newvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
125 :"memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
126 return (SDL_bool) (rv != 0);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
127 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
128 # elif (SIZEOF_VOIDP == 8)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
129 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
130 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
131 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
132 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
133 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
134 void *prev;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
135 __asm__ __volatile__(" mb\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
136 "1: ldq_l %0,%2\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
137 " cmpeq %0,%3,%1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
138 " beq %1,2f\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
139 " mov %4,%1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
140 " stq_c %1,%2\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
141 " beq %1,1b\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
142 " mb\n" "2:":"=&r"(prev), "=&r"(rv)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
143 :"m"(*atomic), "Ir"(oldvalue), "Ir"(newvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
144 :"memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
145 return (SDL_bool) (rv != 0);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
146 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
147 # else
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
148 # error "Your system has an unsupported pointer size"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
149 # endif /* SIZEOF_VOIDP */
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
150 #elif defined(__GNUC__) && defined(__sparc__)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
151 # define ATOMIC_MEMORY_BARRIER \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
152 (__asm__ __volatile__("membar #LoadLoad | #LoadStore" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
153 " | #StoreLoad | #StoreStore" : : : "memory"))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
154 # define ATOMIC_INT_CMP_XCHG(atomic,oldvalue,newvalue) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
155 ({ \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
156 int rv; \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
157 __asm__ __volatile__("cas [%4], %2, %0" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
158 : "=r" (rv), "=m" (*(atomic)) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
159 : "r" (oldvalue), "m" (*(atomic)), \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
160 "r" (atomic), "0" (newvalue)); \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
161 rv == oldvalue; \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
162 })
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
163
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
164 # if (SIZEOF_VOIDP == 4)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
165 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
166 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
167 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
168 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
169 void *rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
170 __asm__ __volatile__("cas [%4], %2, %0":"=r"(rv), "=m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
171 :"r"(oldvalue),
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
172 "m"(*atomic), "r"(atomic), "0"(newvalue));
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
173 return (SDL_bool) (rv == oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
174 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
175 # elif (SIZEOF_VOIDP == 8)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
176 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
177 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
178 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
179 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
180 void *rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
181 void **a = atomic;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
182 __asm__ __volatile__("casx [%4], %2, %0":"=r"(rv), "=m"(*a)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
183 :"r"(oldvalue), "m"(*a), "r"(a), "0"(newvalue));
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
184 return (SDL_bool) (rv == oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
185 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
186 # else
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
187 # error "Your system has an unsupported pointer size"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
188 # endif /* SIZEOF_VOIDP */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
189 #elif defined(__GNUC__) && (defined(__POWERPC__) || defined(__powerpc__) || defined(__ppc__) || defined(_M_PPC))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
190 # define ATOMIC_MEMORY_BARRIER \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
191 (__asm__ __volatile__ ("sync" : : : "memory"))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
192 static __inline__ void
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
193 SDL_atomic_int_add(volatile int *atomic, int value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
194 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
195 int rv, tmp;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
196 __asm__ __volatile__("1: lwarx %0, 0, %3\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
197 " add %1, %0, %4\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
198 " stwcx. %1, 0, %3\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
199 " bne- 1b":"=&b"(rv), "=&r"(tmp), "=m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
200 :"b"(atomic), "r"(value), "m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
201 :"cr0", "memory");
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
202 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
203
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
204 static __inline__ int
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
205 SDL_atomic_int_xchg_add(volatile int *atomic, int value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
206 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
207 int rv, tmp;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
208 __asm__ __volatile__("1: lwarx %0, 0, %3\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
209 " add %1, %0, %4\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
210 " stwcx. %1, 0, %3\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
211 " bne- 1b":"=&b"(rv), "=&r"(tmp), "=m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
212 :"b"(atomic), "r"(value), "m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
213 :"cr0", "memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
214 return rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
215 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
216
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
217 # if (SIZEOF_VOIDP == 4)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
218 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
219 SDL_atomic_int_cmp_xchg(volatile int *atomic, int oldvalue, int newvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
220 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
221 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
222 __asm__ __volatile__(" sync\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
223 "1: lwarx %0, 0, %1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
224 " subf. %0, %2, %0\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
225 " bne 2f\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
226 " stwcx. %3, 0, %1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
227 " bne- 1b\n" "2: isync":"=&r"(rv)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
228 :"b"(atomic), "r"(oldvalue), "r":"cr0", "memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
229 return (SDL_bool) (rv == 0);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
230 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
231
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
232 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
233 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
234 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
235 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
236 void *rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
237 __asm__ __volatile__("sync\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
238 "1: lwarx %0, 0, %1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
239 " subf. %0, %2, %0\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
240 " bne 2f\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
241 " stwcx. %3, 0, %1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
242 " bne- 1b\n" "2: isync":"=&r"(rv)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
243 :"b"(atomic), "r"(oldvalue), "r"(newvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
244 :"cr0", "memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
245 return (SDL_bool) (rv == 0);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
246 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
247 # elif (SIZEOF_VOIDP == 8)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
248 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
249 SDL_atomic_int_cmp_xchg(volatile int *atomic, int oldvalue, int newvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
250 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
251 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
252 __asm__ __volatile__(" sync\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
253 "1: lwarx %0, 0, %1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
254 " extsw %0, %0\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
255 " subf. %0, %2, %0\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
256 " bne 2f\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
257 " stwcx. %3, 0, %1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
258 " bne- 1b\n" "2: isync":"=&r"(rv)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
259 :"b"(atomic), "r"(oldvalue), "r":"cr0", "memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
260 return (SDL_bool) (rv == 0);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
261 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
262
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
263 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
264 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
265 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
266 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
267 void *rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
268 __asm__ __volatile__("sync\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
269 "1: ldarx %0, 0, %1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
270 " subf. %0, %2, %0\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
271 " bne 2f\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
272 " stdcx. %3, 0, %1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
273 " bne- 1b\n" "2: isync":"=&r"(rv)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
274 :"b"(atomic), "r"(oldvalue), "r"(newvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
275 :"cr0", "memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
276 return (SDL_bool) (rv == 0);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
277 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
278 # else
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
279 # error "Your system has an unsupported pointer size"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
280 # endif /* SIZEOF_VOIDP */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
281 #elif defined(__GNUC__) && (defined(__IA64__) || defined(__ia64__))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
282 # define ATOMIC_MEMORY_BARRIER (__sync_synchronize())
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
283 # define SDL_atomic_int_xchg_add(atomic, value) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
284 (__sync_fetch_and_add((atomic),(value)))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
285 # define SDL_atomic_int_add(atomic, value) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
286 ((void)__sync_fetch_and_add((atomic),(value)))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
287 # define SDL_atomic_int_cmp_xchg(atomic,oldvalue,newvalue) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
288 (__sync_bool_compare_and_swap((atomic),(oldvalue),(newvalue)))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
289 # define SDL_atomic_ptr_cmp_xchg(atomic,oldvalue,newvalue) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
290 (__sync_bool_compare_and_swap((long*)(atomic),(long)(oldvalue),(long)(newvalue)))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
291 #elif defined(__GNUC__) && defined(__LINUX__) && (defined(__mips__) || defined(__MIPS__))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
292 static __inline__ int
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
293 SDL_atomic_int_xchg_add(volatile int *atomic, int value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
294 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
295 int rv, tmp;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
296 __asm__ __volatile__("1: \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
297 ".set push \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
298 ".set mips2 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
299 "ll %0,%3 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
300 "addu %1,%4,%0 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
301 "sc %1,%2 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
302 ".set pop \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
303 "beqz %1,1b \n":"=&r"(rv),
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
304 "=&r"(tmp), "=m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
305 :"m"(*atomic), "r"(value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
306 :"memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
307 return rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
308 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
309
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
310 static __inline__ void
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
311 SDL_atomic_int_add(volatile int *atomic, int value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
312 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
313 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
314 __asm__ __volatile__("1: \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
315 ".set push \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
316 ".set mips2 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
317 "ll %0,%2 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
318 "addu %0,%3,%0 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
319 "sc %0,%1 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
320 ".set pop \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
321 "beqz %0,1b \n":"=&r"(rv), "=m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
322 :"m"(*atomic), "r"(value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
323 :"memory");
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
324 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
325
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
326 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
327 SDL_atomic_int_cmp_xchg(volatile int *atomic, int oldvalue, int newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
328 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
329 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
330 __asm__ __volatile__(" .set push \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
331 " .set noat \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
332 " .set mips3 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
333 "1: ll %0, %2 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
334 " bne %0, %z3, 2f \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
335 " .set mips0 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
336 " move $1, %z4 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
337 " .set mips3 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
338 " sc $1, %1 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
339 " beqz $1, 1b \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
340 " sync \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
341 "2: \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
342 " .set pop \n":"=&r"(rv), "=R"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
343 :"R"(*atomic), "Jr"(oldvalue), "Jr"(newvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
344 :"memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
345 return (SDL_bool) rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
346 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
347
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
348 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
349 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
350 void *newvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
351 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
352 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
353 __asm__ __volatile__(" .set push \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
354 " .set noat \n" " .set mips3 \n"
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
355 # if defined(__mips64)
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
356 "1: lld %0, %2 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
357 # else
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
358 "1: ll %0, %2 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
359 # endif
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
360 " bne %0, %z3, 2f \n" " move $1, %z4 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
361 # if defined(__mips64)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
362 " sc $1, %1 \n"
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
363 # else
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
364 " scd $1, %1 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
365 # endif
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
366 " beqz $1, 1b \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
367 " sync \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
368 "2: \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
369 " .set pop \n":"=&r"(rv), "=R"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
370 :"R"(*atomic), "Jr"(oldvalue), "Jr"(newvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
371 :"memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
372 return (SDL_bool) rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
373 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
374 #elif defined(__GNUC__) && defined(__m68k__)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
375 static __inline__ int
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
376 SDL_atomic_int_xchg_add(volatile int *atomic, int value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
377 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
378 int rv = *atomic;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
379 int tmp;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
380 __asm__ __volatile__("1: move%.l %0,%1 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
381 " add%.l %2,%1 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
382 " cas%.l %0,%1,%3 \n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
383 " jbne 1b \n":"=d"(rv), "=&d"(tmp)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
384 :"d"(value), "m"(*atomic), "0"(rv)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
385 :"memory");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
386 return (SDL_bool) rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
387 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
388
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
389 static __inline__ void
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
390 SDL_atomic_int_add(volatile int *atomic, int value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
391 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
392 __asm__ __volatile__("add%.l %0,%1"::"id"(value), "m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
393 :"memory");
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
394 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
395
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
396 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
397 SDL_atomic_int_cmp_xchg(volatile int *atomic, int oldvalue, int newvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
398 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
399 char rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
400 int readvalue;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
401 __asm__ __volatile__("cas%.l %2,%3,%1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
402 "seq %0":"=dm"(rv), "=m"(*atomic), "=d"(readvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
403 :"d"(newvalue), "m"(*atomic), "2"(oldvalue));
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
404 return (SDL_bool) rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
405 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
406
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
407 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
408 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
409 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
410 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
411 char rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
412 int readvalue;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
413 __asm__ __volatile__("cas%.l %2,%3,%1\n"
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
414 "seq %0":"=dm"(rv), "=m"(*atomic), "=d"(readvalue)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
415 :"d"(newvalue), "m"(*atomic), "2"(oldvalue));
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
416 return (SDL_bool) rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
417 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
418 #elif defined(__GNUC__) && defined(__s390__)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
419 # define ATOMIC_INT_CMP_XCHG(atomic,oldvalue,newvalue) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
420 ({ \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
421 int rv = oldvalue; \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
422 __asm__ __volatile__("cs %0, %2, %1" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
423 : "+d" (rv), \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
424 "=Q" (*(atomic)) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
425 : "d" (newvalue), \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
426 "m" (*(atomic)) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
427 : "cc"); \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
428 rv == oldvalue; \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
429 })
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
430 # if (SIZEOF_VOIDP == 4)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
431 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
432 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
433 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
434 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
435 void *rv = oldvalue;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
436 __asm__ __volatile__("cs %0, %2, %1":"+d"(rv), "=Q"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
437 :"d"(newvalue), "m"(*atomic)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
438 :"cc");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
439 return (SDL_bool) (rv == oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
440 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
441 # elif (SIZEOF_VOIDP == 8)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
442 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
443 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
444 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
445 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
446 void *rv = oldvalue;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
447 void **a = atomic;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
448 __asm__ __volatile__("csg %0, %2, %1":"+d"(rv), "=Q"(*a)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
449 :"d"((long) (newvalue)), "m"(*a)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
450 :"cc");
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
451 return (SDL_bool) (rv == oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
452 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
453 # else
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
454 # error "Your system has an unsupported pointer size"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
455 # endif /* SIZEOF_VOIDP */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
456 #elif defined(__WIN32__)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
457 # include <windows.h>
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
458 static __inline__ int
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
459 SDL_atomic_int_xchg_add(volatile int *atomic, int value)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
460 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
461 return InterlockedExchangeAdd(atomic, value);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
462 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
463
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
464 static __inline__ void
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
465 SDL_atomic_int_add(volatile int *atomic, int value)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
466 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
467 InterlockedExchangeAdd(atomic, value);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
468 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
469
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
470 # if (WINVER > 0X0400)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
471 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
472 SDL_atmoic_int_cmp_xchg(volatile int *atomic, int oldvalue, int newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
473 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
474 return (SDL_bool) (InterlockedCompareExchangePointer((PVOID *) atomic,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
475 (PVOID) newvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
476 (PVOID) oldvalue) ==
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
477 oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
478 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
479
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
480
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
481 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
482 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
483 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
484 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
485 return (InterlockedCompareExchangePointer(atomic, newvalue, oldvalue) ==
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
486 oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
487 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
488 # else /* WINVER <= 0x0400 */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
489 # if (SIZEOF_VOIDP != 4)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
490 # error "InterlockedCompareExchangePointer needed"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
491 # endif
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
492
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
493 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
494 SDL_atomic_int_cmp_xchg(volatile int *atomic, int oldvalue, int newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
495 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
496 return (InterlockedCompareExchange(atomic, newvalue, oldvalue) ==
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
497 oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
498 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
499
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
500 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
501 SDL_atomic_ptr_cmp_xchg(volatile void **atomic, void *oldvalue,
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
502 void *newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
503 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
504 return (InterlockedCompareExchange(atomic, newvalue, oldvalue) ==
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
505 oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
506 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
507 # endif
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
508 #else /* when all else fails */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
509 # define SDL_ATOMIC_OPS_NOT_SUPPORTED
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
510 # warning "Atomic Ops for this platform not supported!"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
511 static __inline__ int
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
512 SDL_atomic_int_xchg_add(volatile int *atomic, int value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
513 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
514 int rv = *atomic;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
515 *(atomic) += value;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
516 return rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
517 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
518
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
519 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
520 SDL_atomic_int_cmp_xchg(volatile int *atomic, int oldvalue, int newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
521 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
522 return (*atomic == oldvalue) ?
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
523 ((*atomic = newvalue), SDL_TRUE) : SDL_FALSE;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
524 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
525
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
526 static __inline__ void
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
527 SDL_atomic_int_add(volatile int *atomic, int value)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
528 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
529 *atomic += value;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
530 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
531 #endif /* arch & platforms */
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
532
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
533 #ifdef ATOMIC_INT_CMP_XCHG
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
534 static __inline__ SDL_bool
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
535 SDL_atomic_int_cmp_xchg(volatile int *atomic, int oldvalue, int newvalue)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
536 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
537 return (SDL_bool) ATOMIC_INT_CMP_XCHG(atomic, oldvalue, newvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
538 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
539
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
540 static __inline__ int
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
541 SDL_atomic_int_xchg_add(volatile int *atomic, int value)
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
542 {
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
543 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
544 do
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
545 rv = *atomic;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
546 while (!ATOMIC_INT_CMP_XCHG(atomic, rv, rv + value));
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
547 return rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
548 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
549
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
550 static __inline__ void
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
551 SDL_atomic_int_add(volatile int *atomic, int value)
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
552 {
3186
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
553 int rv;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
554 do
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
555 rv = *atomic;
Sam Lantinga <slouken@libsdl.org>
parents: 3181
diff changeset
556 while (!ATOMIC_INT_CMP_XCHG(atomic, rv, rv + value));
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
557 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
558 #endif /* ATOMIC_CMP_XCHG */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
559
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
560 #ifdef ATOMIC_MEMORY_BARRIER
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
561 # define SDL_atomic_int_get(atomic) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
562 (ATOMIC_MEMORY_BARRIER,*(atomic))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
563 # define SDL_atomic_int_set(atomic,value) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
564 (*(atomic)=value,ATOMIC_MEMORY_BARRIER)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
565 #else
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
566 # define SDL_atomic_int_get(atomic) (*(atomic))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
567 # define SDL_atomic_int_set(atomic, newvalue) ((void)(*(atomic) = (newvalue)))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
568 #endif /* MEMORY_BARRIER_NEEDED */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
569
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
570 #define SDL_atomic_int_inc(atomic) (SDL_atomic_int_add((atomic),1))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
571 #define SDL_atomic_int_dec_test(atomic) (SDL_atomic_int_xchg_add((atomic),-1) == 1)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
572
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
573 /* Ends C function definitions when using C++ */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
574 #ifdef __cplusplus
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
575 /* *INDENT-OFF* */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
576 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
577 /* *INDENT-ON* */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
578 #endif
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
579
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
580 #include "close_code.h"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
581
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
582 #endif /* _SDL_atomic_h_ */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
583
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
584 /* vi: set ts=4 sw=4 expandtab: */