Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/amd64/include/atomic.h
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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 * $FreeBSD$ 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 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 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 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 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 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 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 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 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_ */
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