1 /*-
2 * Copyright (c) 1998 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/10/sys/amd64/include/atomic.h 337041 2018-08-01 12:49:51Z hselasky $
27 */
28 #ifndef _MACHINE_ATOMIC_H_
29 #define _MACHINE_ATOMIC_H_
30
31 #ifndef _SYS_CDEFS_H_
32 #error this file needs sys/cdefs.h as a prerequisite
33 #endif
34
35 #define mb() __asm __volatile("mfence;" : : : "memory")
36 #define wmb() __asm __volatile("sfence;" : : : "memory")
37 #define rmb() __asm __volatile("lfence;" : : : "memory")
38
39 /*
40 * Various simple operations on memory, each of which is atomic in the
41 * presence of interrupts and multiple processors.
42 *
43 * atomic_set_char(P, V) (*(u_char *)(P) |= (V))
44 * atomic_clear_char(P, V) (*(u_char *)(P) &= ~(V))
45 * atomic_add_char(P, V) (*(u_char *)(P) += (V))
46 * atomic_subtract_char(P, V) (*(u_char *)(P) -= (V))
47 *
48 * atomic_set_short(P, V) (*(u_short *)(P) |= (V))
49 * atomic_clear_short(P, V) (*(u_short *)(P) &= ~(V))
50 * atomic_add_short(P, V) (*(u_short *)(P) += (V))
51 * atomic_subtract_short(P, V) (*(u_short *)(P) -= (V))
52 *
53 * atomic_set_int(P, V) (*(u_int *)(P) |= (V))
54 * atomic_clear_int(P, V) (*(u_int *)(P) &= ~(V))
55 * atomic_add_int(P, V) (*(u_int *)(P) += (V))
56 * atomic_subtract_int(P, V) (*(u_int *)(P) -= (V))
57 * atomic_swap_int(P, V) (return (*(u_int *)(P)); *(u_int *)(P) = (V);)
58 * atomic_readandclear_int(P) (return (*(u_int *)(P)); *(u_int *)(P) = 0;)
59 *
60 * atomic_set_long(P, V) (*(u_long *)(P) |= (V))
61 * atomic_clear_long(P, V) (*(u_long *)(P) &= ~(V))
62 * atomic_add_long(P, V) (*(u_long *)(P) += (V))
63 * atomic_subtract_long(P, V) (*(u_long *)(P) -= (V))
64 * atomic_swap_long(P, V) (return (*(u_long *)(P)); *(u_long *)(P) = (V);)
65 * atomic_readandclear_long(P) (return (*(u_long *)(P)); *(u_long *)(P) = 0;)
66 */
67
68 /*
69 * The above functions are expanded inline in the statically-linked
70 * kernel. Lock prefixes are generated if an SMP kernel is being
71 * built.
72 *
73 * Kernel modules call real functions which are built into the kernel.
74 * This allows kernel modules to be portable between UP and SMP systems.
75 */
76 #if defined(KLD_MODULE) || !defined(__GNUCLIKE_ASM)
77 #define ATOMIC_ASM(NAME, TYPE, OP, CONS, V) \
78 void atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v); \
79 void atomic_##NAME##_barr_##TYPE(volatile u_##TYPE *p, u_##TYPE v)
80
81 int atomic_cmpset_char(volatile u_char *dst, u_char expect, u_char src);
82 int atomic_cmpset_short(volatile u_short *dst, u_short expect, u_short src);
83 int atomic_cmpset_int(volatile u_int *dst, u_int expect, u_int src);
84 int atomic_cmpset_long(volatile u_long *dst, u_long expect, u_long src);
85 int atomic_fcmpset_char(volatile u_char *dst, u_char *expect, u_char src);
86 int atomic_fcmpset_short(volatile u_short *dst, u_short *expect,
87 u_short src);
88 int atomic_fcmpset_int(volatile u_int *dst, u_int *expect, u_int src);
89 int atomic_fcmpset_long(volatile u_long *dst, u_long *expect, u_long src);
90 u_int atomic_fetchadd_int(volatile u_int *p, u_int v);
91 u_long atomic_fetchadd_long(volatile u_long *p, u_long v);
92 int atomic_testandset_int(volatile u_int *p, u_int v);
93 int atomic_testandset_long(volatile u_long *p, u_int v);
94 int atomic_testandclear_int(volatile u_int *p, u_int v);
95 int atomic_testandclear_long(volatile u_long *p, u_int v);
96
97 #define ATOMIC_LOAD(TYPE, LOP) \
98 u_##TYPE atomic_load_acq_##TYPE(volatile u_##TYPE *p)
99 #define ATOMIC_STORE(TYPE) \
100 void atomic_store_rel_##TYPE(volatile u_##TYPE *p, u_##TYPE v)
101
102 #else /* !KLD_MODULE && __GNUCLIKE_ASM */
103
104 /*
105 * For userland, always use lock prefixes so that the binaries will run
106 * on both SMP and !SMP systems.
107 */
108 #if defined(SMP) || !defined(_KERNEL)
109 #define MPLOCKED "lock ; "
110 #else
111 #define MPLOCKED
112 #endif
113
114 /*
115 * The assembly is volatilized to avoid code chunk removal by the compiler.
116 * GCC aggressively reorders operations and memory clobbering is necessary
117 * in order to avoid that for memory barriers.
118 */
119 #define ATOMIC_ASM(NAME, TYPE, OP, CONS, V) \
120 static __inline void \
121 atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\
122 { \
123 __asm __volatile(MPLOCKED OP \
124 : "+m" (*p) \
125 : CONS (V) \
126 : "cc"); \
127 } \
128 \
129 static __inline void \
130 atomic_##NAME##_barr_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\
131 { \
132 __asm __volatile(MPLOCKED OP \
133 : "+m" (*p) \
134 : CONS (V) \
135 : "memory", "cc"); \
136 } \
137 struct __hack
138
139 /*
140 * Atomic compare and set, used by the mutex functions.
141 *
142 * cmpset:
143 * if (*dst == expect)
144 * *dst = src
145 *
146 * fcmpset:
147 * if (*dst == *expect)
148 * *dst = src
149 * else
150 * *expect = *dst
151 *
152 * Returns 0 on failure, non-zero on success.
153 */
154 #define ATOMIC_CMPSET(TYPE) \
155 static __inline int \
156 atomic_cmpset_##TYPE(volatile u_##TYPE *dst, u_##TYPE expect, u_##TYPE src) \
157 { \
158 u_char res; \
159 \
160 __asm __volatile( \
161 " " MPLOCKED " " \
162 " cmpxchg %3,%1 ; " \
163 " sete %0 ; " \
164 "# atomic_cmpset_" #TYPE " " \
165 : "=q" (res), /* 0 */ \
166 "+m" (*dst), /* 1 */ \
167 "+a" (expect) /* 2 */ \
168 : "r" (src) /* 3 */ \
169 : "memory", "cc"); \
170 return (res); \
171 } \
172 \
173 static __inline int \
174 atomic_fcmpset_##TYPE(volatile u_##TYPE *dst, u_##TYPE *expect, u_##TYPE src) \
175 { \
176 u_char res; \
177 \
178 __asm __volatile( \
179 " " MPLOCKED " " \
180 " cmpxchg %3,%1 ; " \
181 " sete %0 ; " \
182 "# atomic_fcmpset_" #TYPE " " \
183 : "=q" (res), /* 0 */ \
184 "+m" (*dst), /* 1 */ \
185 "+a" (*expect) /* 2 */ \
186 : "r" (src) /* 3 */ \
187 : "memory", "cc"); \
188 return (res); \
189 }
190
191 ATOMIC_CMPSET(char);
192 ATOMIC_CMPSET(short);
193 ATOMIC_CMPSET(int);
194 ATOMIC_CMPSET(long);
195
196 /*
197 * Atomically add the value of v to the integer pointed to by p and return
198 * the previous value of *p.
199 */
200 static __inline u_int
atomic_fetchadd_int(volatile u_int * p,u_int v)201 atomic_fetchadd_int(volatile u_int *p, u_int v)
202 {
203
204 __asm __volatile(
205 " " MPLOCKED " "
206 " xaddl %0,%1 ; "
207 "# atomic_fetchadd_int"
208 : "+r" (v), /* 0 */
209 "+m" (*p) /* 1 */
210 : : "cc");
211 return (v);
212 }
213
214 /*
215 * Atomically add the value of v to the long integer pointed to by p and return
216 * the previous value of *p.
217 */
218 static __inline u_long
atomic_fetchadd_long(volatile u_long * p,u_long v)219 atomic_fetchadd_long(volatile u_long *p, u_long v)
220 {
221
222 __asm __volatile(
223 " " MPLOCKED " "
224 " xaddq %0,%1 ; "
225 "# atomic_fetchadd_long"
226 : "+r" (v), /* 0 */
227 "+m" (*p) /* 1 */
228 : : "cc");
229 return (v);
230 }
231
232 static __inline int
atomic_testandset_int(volatile u_int * p,u_int v)233 atomic_testandset_int(volatile u_int *p, u_int v)
234 {
235 u_char res;
236
237 __asm __volatile(
238 " " MPLOCKED " "
239 " btsl %2,%1 ; "
240 " setc %0 ; "
241 "# atomic_testandset_int"
242 : "=q" (res), /* 0 */
243 "+m" (*p) /* 1 */
244 : "Ir" (v & 0x1f) /* 2 */
245 : "cc");
246 return (res);
247 }
248
249 static __inline int
atomic_testandset_long(volatile u_long * p,u_int v)250 atomic_testandset_long(volatile u_long *p, u_int v)
251 {
252 u_char res;
253
254 __asm __volatile(
255 " " MPLOCKED " "
256 " btsq %2,%1 ; "
257 " setc %0 ; "
258 "# atomic_testandset_long"
259 : "=q" (res), /* 0 */
260 "+m" (*p) /* 1 */
261 : "Jr" ((u_long)(v & 0x3f)) /* 2 */
262 : "cc");
263 return (res);
264 }
265
266 static __inline int
atomic_testandclear_int(volatile u_int * p,u_int v)267 atomic_testandclear_int(volatile u_int *p, u_int v)
268 {
269 u_char res;
270
271 __asm __volatile(
272 " " MPLOCKED " "
273 " btrl %2,%1 ; "
274 " setc %0 ; "
275 "# atomic_testandclear_int"
276 : "=q" (res), /* 0 */
277 "+m" (*p) /* 1 */
278 : "Ir" (v & 0x1f) /* 2 */
279 : "cc");
280 return (res);
281 }
282
283 static __inline int
atomic_testandclear_long(volatile u_long * p,u_int v)284 atomic_testandclear_long(volatile u_long *p, u_int v)
285 {
286 u_char res;
287
288 __asm __volatile(
289 " " MPLOCKED " "
290 " btrq %2,%1 ; "
291 " setc %0 ; "
292 "# atomic_testandclear_long"
293 : "=q" (res), /* 0 */
294 "+m" (*p) /* 1 */
295 : "Jr" ((u_long)(v & 0x3f)) /* 2 */
296 : "cc");
297 return (res);
298 }
299
300 /*
301 * We assume that a = b will do atomic loads and stores. Due to the
302 * IA32 memory model, a simple store guarantees release semantics.
303 *
304 * However, loads may pass stores, so for atomic_load_acq we have to
305 * ensure a Store/Load barrier to do the load in SMP kernels. We use
306 * "lock cmpxchg" as recommended by the AMD Software Optimization
307 * Guide, and not mfence. For UP kernels, however, the cache of the
308 * single processor is always consistent, so we only need to take care
309 * of the compiler.
310 */
311 #define ATOMIC_STORE(TYPE) \
312 static __inline void \
313 atomic_store_rel_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\
314 { \
315 __compiler_membar(); \
316 *p = v; \
317 } \
318 struct __hack
319
320 #if defined(_KERNEL) && !defined(SMP)
321
322 #define ATOMIC_LOAD(TYPE, LOP) \
323 static __inline u_##TYPE \
324 atomic_load_acq_##TYPE(volatile u_##TYPE *p) \
325 { \
326 u_##TYPE tmp; \
327 \
328 tmp = *p; \
329 __compiler_membar(); \
330 return (tmp); \
331 } \
332 struct __hack
333
334 #else /* !(_KERNEL && !SMP) */
335
336 #define ATOMIC_LOAD(TYPE, LOP) \
337 static __inline u_##TYPE \
338 atomic_load_acq_##TYPE(volatile u_##TYPE *p) \
339 { \
340 u_##TYPE res; \
341 \
342 __asm __volatile(MPLOCKED LOP \
343 : "=a" (res), /* 0 */ \
344 "+m" (*p) /* 1 */ \
345 : : "memory", "cc"); \
346 return (res); \
347 } \
348 struct __hack
349
350 #endif /* _KERNEL && !SMP */
351
352 #endif /* KLD_MODULE || !__GNUCLIKE_ASM */
353
354 ATOMIC_ASM(set, char, "orb %b1,%0", "iq", v);
355 ATOMIC_ASM(clear, char, "andb %b1,%0", "iq", ~v);
356 ATOMIC_ASM(add, char, "addb %b1,%0", "iq", v);
357 ATOMIC_ASM(subtract, char, "subb %b1,%0", "iq", v);
358
359 ATOMIC_ASM(set, short, "orw %w1,%0", "ir", v);
360 ATOMIC_ASM(clear, short, "andw %w1,%0", "ir", ~v);
361 ATOMIC_ASM(add, short, "addw %w1,%0", "ir", v);
362 ATOMIC_ASM(subtract, short, "subw %w1,%0", "ir", v);
363
364 ATOMIC_ASM(set, int, "orl %1,%0", "ir", v);
365 ATOMIC_ASM(clear, int, "andl %1,%0", "ir", ~v);
366 ATOMIC_ASM(add, int, "addl %1,%0", "ir", v);
367 ATOMIC_ASM(subtract, int, "subl %1,%0", "ir", v);
368
369 ATOMIC_ASM(set, long, "orq %1,%0", "ir", v);
370 ATOMIC_ASM(clear, long, "andq %1,%0", "ir", ~v);
371 ATOMIC_ASM(add, long, "addq %1,%0", "ir", v);
372 ATOMIC_ASM(subtract, long, "subq %1,%0", "ir", v);
373
374 ATOMIC_LOAD(char, "cmpxchgb %b0,%1");
375 ATOMIC_LOAD(short, "cmpxchgw %w0,%1");
376 ATOMIC_LOAD(int, "cmpxchgl %0,%1");
377 ATOMIC_LOAD(long, "cmpxchgq %0,%1");
378
379 ATOMIC_STORE(char);
380 ATOMIC_STORE(short);
381 ATOMIC_STORE(int);
382 ATOMIC_STORE(long);
383
384 #undef ATOMIC_ASM
385 #undef ATOMIC_LOAD
386 #undef ATOMIC_STORE
387
388 #ifndef WANT_FUNCTIONS
389
390 /* Read the current value and store a new value in the destination. */
391 #ifdef __GNUCLIKE_ASM
392
393 static __inline u_int
atomic_swap_int(volatile u_int * p,u_int v)394 atomic_swap_int(volatile u_int *p, u_int v)
395 {
396
397 __asm __volatile(
398 " xchgl %1,%0 ; "
399 "# atomic_swap_int"
400 : "+r" (v), /* 0 */
401 "+m" (*p)); /* 1 */
402 return (v);
403 }
404
405 static __inline u_long
atomic_swap_long(volatile u_long * p,u_long v)406 atomic_swap_long(volatile u_long *p, u_long v)
407 {
408
409 __asm __volatile(
410 " xchgq %1,%0 ; "
411 "# atomic_swap_long"
412 : "+r" (v), /* 0 */
413 "+m" (*p)); /* 1 */
414 return (v);
415 }
416
417 #else /* !__GNUCLIKE_ASM */
418
419 u_int atomic_swap_int(volatile u_int *p, u_int v);
420 u_long atomic_swap_long(volatile u_long *p, u_long v);
421
422 #endif /* __GNUCLIKE_ASM */
423
424 #define atomic_set_acq_char atomic_set_barr_char
425 #define atomic_set_rel_char atomic_set_barr_char
426 #define atomic_clear_acq_char atomic_clear_barr_char
427 #define atomic_clear_rel_char atomic_clear_barr_char
428 #define atomic_add_acq_char atomic_add_barr_char
429 #define atomic_add_rel_char atomic_add_barr_char
430 #define atomic_subtract_acq_char atomic_subtract_barr_char
431 #define atomic_subtract_rel_char atomic_subtract_barr_char
432 #define atomic_cmpset_acq_char atomic_cmpset_char
433 #define atomic_cmpset_rel_char atomic_cmpset_char
434 #define atomic_fcmpset_acq_char atomic_fcmpset_char
435 #define atomic_fcmpset_rel_char atomic_fcmpset_char
436
437 #define atomic_set_acq_short atomic_set_barr_short
438 #define atomic_set_rel_short atomic_set_barr_short
439 #define atomic_clear_acq_short atomic_clear_barr_short
440 #define atomic_clear_rel_short atomic_clear_barr_short
441 #define atomic_add_acq_short atomic_add_barr_short
442 #define atomic_add_rel_short atomic_add_barr_short
443 #define atomic_subtract_acq_short atomic_subtract_barr_short
444 #define atomic_subtract_rel_short atomic_subtract_barr_short
445 #define atomic_cmpset_acq_short atomic_cmpset_short
446 #define atomic_cmpset_rel_short atomic_cmpset_short
447 #define atomic_fcmpset_acq_short atomic_fcmpset_short
448 #define atomic_fcmpset_rel_short atomic_fcmpset_short
449
450 #define atomic_set_acq_int atomic_set_barr_int
451 #define atomic_set_rel_int atomic_set_barr_int
452 #define atomic_clear_acq_int atomic_clear_barr_int
453 #define atomic_clear_rel_int atomic_clear_barr_int
454 #define atomic_add_acq_int atomic_add_barr_int
455 #define atomic_add_rel_int atomic_add_barr_int
456 #define atomic_subtract_acq_int atomic_subtract_barr_int
457 #define atomic_subtract_rel_int atomic_subtract_barr_int
458 #define atomic_cmpset_acq_int atomic_cmpset_int
459 #define atomic_cmpset_rel_int atomic_cmpset_int
460 #define atomic_fcmpset_acq_int atomic_fcmpset_int
461 #define atomic_fcmpset_rel_int atomic_fcmpset_int
462
463 #define atomic_set_acq_long atomic_set_barr_long
464 #define atomic_set_rel_long atomic_set_barr_long
465 #define atomic_clear_acq_long atomic_clear_barr_long
466 #define atomic_clear_rel_long atomic_clear_barr_long
467 #define atomic_add_acq_long atomic_add_barr_long
468 #define atomic_add_rel_long atomic_add_barr_long
469 #define atomic_subtract_acq_long atomic_subtract_barr_long
470 #define atomic_subtract_rel_long atomic_subtract_barr_long
471 #define atomic_cmpset_acq_long atomic_cmpset_long
472 #define atomic_cmpset_rel_long atomic_cmpset_long
473 #define atomic_fcmpset_acq_long atomic_fcmpset_long
474 #define atomic_fcmpset_rel_long atomic_fcmpset_long
475
476 #define atomic_readandclear_int(p) atomic_swap_int(p, 0)
477 #define atomic_readandclear_long(p) atomic_swap_long(p, 0)
478
479 /* Operations on 8-bit bytes. */
480 #define atomic_set_8 atomic_set_char
481 #define atomic_set_acq_8 atomic_set_acq_char
482 #define atomic_set_rel_8 atomic_set_rel_char
483 #define atomic_clear_8 atomic_clear_char
484 #define atomic_clear_acq_8 atomic_clear_acq_char
485 #define atomic_clear_rel_8 atomic_clear_rel_char
486 #define atomic_add_8 atomic_add_char
487 #define atomic_add_acq_8 atomic_add_acq_char
488 #define atomic_add_rel_8 atomic_add_rel_char
489 #define atomic_subtract_8 atomic_subtract_char
490 #define atomic_subtract_acq_8 atomic_subtract_acq_char
491 #define atomic_subtract_rel_8 atomic_subtract_rel_char
492 #define atomic_load_acq_8 atomic_load_acq_char
493 #define atomic_store_rel_8 atomic_store_rel_char
494 #define atomic_cmpset_8 atomic_cmpset_char
495 #define atomic_cmpset_acq_8 atomic_cmpset_acq_char
496 #define atomic_cmpset_rel_8 atomic_cmpset_rel_char
497 #define atomic_fcmpset_8 atomic_fcmpset_char
498 #define atomic_fcmpset_acq_8 atomic_fcmpset_acq_char
499 #define atomic_fcmpset_rel_8 atomic_fcmpset_rel_char
500
501 /* Operations on 16-bit words. */
502 #define atomic_set_16 atomic_set_short
503 #define atomic_set_acq_16 atomic_set_acq_short
504 #define atomic_set_rel_16 atomic_set_rel_short
505 #define atomic_clear_16 atomic_clear_short
506 #define atomic_clear_acq_16 atomic_clear_acq_short
507 #define atomic_clear_rel_16 atomic_clear_rel_short
508 #define atomic_add_16 atomic_add_short
509 #define atomic_add_acq_16 atomic_add_acq_short
510 #define atomic_add_rel_16 atomic_add_rel_short
511 #define atomic_subtract_16 atomic_subtract_short
512 #define atomic_subtract_acq_16 atomic_subtract_acq_short
513 #define atomic_subtract_rel_16 atomic_subtract_rel_short
514 #define atomic_load_acq_16 atomic_load_acq_short
515 #define atomic_store_rel_16 atomic_store_rel_short
516 #define atomic_cmpset_16 atomic_cmpset_short
517 #define atomic_cmpset_acq_16 atomic_cmpset_acq_short
518 #define atomic_cmpset_rel_16 atomic_cmpset_rel_short
519 #define atomic_fcmpset_16 atomic_fcmpset_short
520 #define atomic_fcmpset_acq_16 atomic_fcmpset_acq_short
521 #define atomic_fcmpset_rel_16 atomic_fcmpset_rel_short
522
523 /* Operations on 32-bit double words. */
524 #define atomic_set_32 atomic_set_int
525 #define atomic_set_acq_32 atomic_set_acq_int
526 #define atomic_set_rel_32 atomic_set_rel_int
527 #define atomic_clear_32 atomic_clear_int
528 #define atomic_clear_acq_32 atomic_clear_acq_int
529 #define atomic_clear_rel_32 atomic_clear_rel_int
530 #define atomic_add_32 atomic_add_int
531 #define atomic_add_acq_32 atomic_add_acq_int
532 #define atomic_add_rel_32 atomic_add_rel_int
533 #define atomic_subtract_32 atomic_subtract_int
534 #define atomic_subtract_acq_32 atomic_subtract_acq_int
535 #define atomic_subtract_rel_32 atomic_subtract_rel_int
536 #define atomic_load_acq_32 atomic_load_acq_int
537 #define atomic_store_rel_32 atomic_store_rel_int
538 #define atomic_cmpset_32 atomic_cmpset_int
539 #define atomic_cmpset_acq_32 atomic_cmpset_acq_int
540 #define atomic_cmpset_rel_32 atomic_cmpset_rel_int
541 #define atomic_fcmpset_32 atomic_fcmpset_int
542 #define atomic_fcmpset_acq_32 atomic_fcmpset_acq_int
543 #define atomic_fcmpset_rel_32 atomic_fcmpset_rel_int
544 #define atomic_swap_32 atomic_swap_int
545 #define atomic_readandclear_32 atomic_readandclear_int
546 #define atomic_fetchadd_32 atomic_fetchadd_int
547 #define atomic_testandset_32 atomic_testandset_int
548 #define atomic_testandclear_32 atomic_testandclear_int
549
550 /* Operations on 64-bit quad words. */
551 #define atomic_set_64 atomic_set_long
552 #define atomic_set_acq_64 atomic_set_acq_long
553 #define atomic_set_rel_64 atomic_set_rel_long
554 #define atomic_clear_64 atomic_clear_long
555 #define atomic_clear_acq_64 atomic_clear_acq_long
556 #define atomic_clear_rel_64 atomic_clear_rel_long
557 #define atomic_add_64 atomic_add_long
558 #define atomic_add_acq_64 atomic_add_acq_long
559 #define atomic_add_rel_64 atomic_add_rel_long
560 #define atomic_subtract_64 atomic_subtract_long
561 #define atomic_subtract_acq_64 atomic_subtract_acq_long
562 #define atomic_subtract_rel_64 atomic_subtract_rel_long
563 #define atomic_load_acq_64 atomic_load_acq_long
564 #define atomic_store_rel_64 atomic_store_rel_long
565 #define atomic_cmpset_64 atomic_cmpset_long
566 #define atomic_cmpset_acq_64 atomic_cmpset_acq_long
567 #define atomic_cmpset_rel_64 atomic_cmpset_rel_long
568 #define atomic_fcmpset_64 atomic_fcmpset_long
569 #define atomic_fcmpset_acq_64 atomic_fcmpset_acq_long
570 #define atomic_fcmpset_rel_64 atomic_fcmpset_rel_long
571 #define atomic_swap_64 atomic_swap_long
572 #define atomic_readandclear_64 atomic_readandclear_long
573 #define atomic_fetchadd_64 atomic_fetchadd_long
574 #define atomic_testandset_64 atomic_testandset_long
575 #define atomic_testandclear_64 atomic_testandclear_long
576
577 /* Operations on pointers. */
578 #define atomic_set_ptr atomic_set_long
579 #define atomic_set_acq_ptr atomic_set_acq_long
580 #define atomic_set_rel_ptr atomic_set_rel_long
581 #define atomic_clear_ptr atomic_clear_long
582 #define atomic_clear_acq_ptr atomic_clear_acq_long
583 #define atomic_clear_rel_ptr atomic_clear_rel_long
584 #define atomic_add_ptr atomic_add_long
585 #define atomic_add_acq_ptr atomic_add_acq_long
586 #define atomic_add_rel_ptr atomic_add_rel_long
587 #define atomic_subtract_ptr atomic_subtract_long
588 #define atomic_subtract_acq_ptr atomic_subtract_acq_long
589 #define atomic_subtract_rel_ptr atomic_subtract_rel_long
590 #define atomic_load_acq_ptr atomic_load_acq_long
591 #define atomic_store_rel_ptr atomic_store_rel_long
592 #define atomic_cmpset_ptr atomic_cmpset_long
593 #define atomic_cmpset_acq_ptr atomic_cmpset_acq_long
594 #define atomic_cmpset_rel_ptr atomic_cmpset_rel_long
595 #define atomic_fcmpset_ptr atomic_fcmpset_long
596 #define atomic_fcmpset_acq_ptr atomic_fcmpset_acq_long
597 #define atomic_fcmpset_rel_ptr atomic_fcmpset_rel_long
598 #define atomic_swap_ptr atomic_swap_long
599 #define atomic_readandclear_ptr atomic_readandclear_long
600
601 #endif /* !WANT_FUNCTIONS */
602
603 #endif /* !_MACHINE_ATOMIC_H_ */
604