1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1998 Doug Rabson 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 #ifndef _MACHINE_ATOMIC_H_ 31 #define _MACHINE_ATOMIC_H_ 32 33 #ifndef _SYS_CDEFS_H_ 34 #error this file needs sys/cdefs.h as a prerequisite 35 #endif 36 37 /* 38 * To express interprocessor (as opposed to processor and device) memory 39 * ordering constraints, use the atomic_*() functions with acquire and release 40 * semantics rather than the *mb() functions. An architecture's memory 41 * ordering (or memory consistency) model governs the order in which a 42 * program's accesses to different locations may be performed by an 43 * implementation of that architecture. In general, for memory regions 44 * defined as writeback cacheable, the memory ordering implemented by amd64 45 * processors preserves the program ordering of a load followed by a load, a 46 * load followed by a store, and a store followed by a store. Only a store 47 * followed by a load to a different memory location may be reordered. 48 * Therefore, except for special cases, like non-temporal memory accesses or 49 * memory regions defined as write combining, the memory ordering effects 50 * provided by the sfence instruction in the wmb() function and the lfence 51 * instruction in the rmb() function are redundant. In contrast, the 52 * atomic_*() functions with acquire and release semantics do not perform 53 * redundant instructions for ordinary cases of interprocessor memory 54 * ordering on any architecture. 55 */ 56 #define mb() __asm __volatile("mfence;" : : : "memory") 57 #define wmb() __asm __volatile("sfence;" : : : "memory") 58 #define rmb() __asm __volatile("lfence;" : : : "memory") 59 60 #ifdef _KERNEL 61 /* 62 * OFFSETOF_MONITORBUF == __pcpu_offset(pc_monitorbuf). 63 * 64 * The open-coded number is used instead of the symbolic expression to 65 * avoid a dependency on sys/pcpu.h in machine/atomic.h consumers. 66 * An assertion in amd64/vm_machdep.c ensures that the value is correct. 67 */ 68 #define OFFSETOF_MONITORBUF 0x100 69 #endif 70 71 #ifndef SAN_RUNTIME 72 #if defined(KASAN) 73 #define ATOMIC_SAN_PREFIX kasan 74 #elif defined(KCSAN) 75 #define ATOMIC_SAN_PREFIX kcsan 76 #endif 77 #endif 78 79 #ifdef ATOMIC_SAN_PREFIX 80 #include <sys/atomic_san.h> 81 #else 82 #include <sys/atomic_common.h> 83 84 /* 85 * Various simple operations on memory, each of which is atomic in the 86 * presence of interrupts and multiple processors. 87 * 88 * atomic_set_char(P, V) (*(u_char *)(P) |= (V)) 89 * atomic_clear_char(P, V) (*(u_char *)(P) &= ~(V)) 90 * atomic_add_char(P, V) (*(u_char *)(P) += (V)) 91 * atomic_subtract_char(P, V) (*(u_char *)(P) -= (V)) 92 * 93 * atomic_set_short(P, V) (*(u_short *)(P) |= (V)) 94 * atomic_clear_short(P, V) (*(u_short *)(P) &= ~(V)) 95 * atomic_add_short(P, V) (*(u_short *)(P) += (V)) 96 * atomic_subtract_short(P, V) (*(u_short *)(P) -= (V)) 97 * 98 * atomic_set_int(P, V) (*(u_int *)(P) |= (V)) 99 * atomic_clear_int(P, V) (*(u_int *)(P) &= ~(V)) 100 * atomic_add_int(P, V) (*(u_int *)(P) += (V)) 101 * atomic_subtract_int(P, V) (*(u_int *)(P) -= (V)) 102 * atomic_swap_int(P, V) (return (*(u_int *)(P)); *(u_int *)(P) = (V);) 103 * atomic_readandclear_int(P) (return (*(u_int *)(P)); *(u_int *)(P) = 0;) 104 * 105 * atomic_set_long(P, V) (*(u_long *)(P) |= (V)) 106 * atomic_clear_long(P, V) (*(u_long *)(P) &= ~(V)) 107 * atomic_add_long(P, V) (*(u_long *)(P) += (V)) 108 * atomic_subtract_long(P, V) (*(u_long *)(P) -= (V)) 109 * atomic_swap_long(P, V) (return (*(u_long *)(P)); *(u_long *)(P) = (V);) 110 * atomic_readandclear_long(P) (return (*(u_long *)(P)); *(u_long *)(P) = 0;) 111 */ 112 113 /* 114 * The above functions are expanded inline in the statically-linked 115 * kernel. Lock prefixes are generated if an SMP kernel is being 116 * built. 117 * 118 * Kernel modules call real functions which are built into the kernel. 119 * This allows kernel modules to be portable between UP and SMP systems. 120 */ 121 #if !defined(__GNUCLIKE_ASM) 122 #define ATOMIC_ASM(NAME, TYPE, OP, CONS, V) \ 123 void atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v); \ 124 void atomic_##NAME##_barr_##TYPE(volatile u_##TYPE *p, u_##TYPE v) 125 126 int atomic_cmpset_char(volatile u_char *dst, u_char expect, u_char src); 127 int atomic_cmpset_short(volatile u_short *dst, u_short expect, u_short src); 128 int atomic_cmpset_int(volatile u_int *dst, u_int expect, u_int src); 129 int atomic_cmpset_long(volatile u_long *dst, u_long expect, u_long src); 130 int atomic_fcmpset_char(volatile u_char *dst, u_char *expect, u_char src); 131 int atomic_fcmpset_short(volatile u_short *dst, u_short *expect, 132 u_short src); 133 int atomic_fcmpset_int(volatile u_int *dst, u_int *expect, u_int src); 134 int atomic_fcmpset_long(volatile u_long *dst, u_long *expect, u_long src); 135 u_int atomic_fetchadd_int(volatile u_int *p, u_int v); 136 u_long atomic_fetchadd_long(volatile u_long *p, u_long v); 137 int atomic_testandset_int(volatile u_int *p, u_int v); 138 int atomic_testandset_long(volatile u_long *p, u_int v); 139 int atomic_testandclear_int(volatile u_int *p, u_int v); 140 int atomic_testandclear_long(volatile u_long *p, u_int v); 141 void atomic_thread_fence_acq(void); 142 void atomic_thread_fence_acq_rel(void); 143 void atomic_thread_fence_rel(void); 144 void atomic_thread_fence_seq_cst(void); 145 146 #define ATOMIC_LOAD(TYPE) \ 147 u_##TYPE atomic_load_acq_##TYPE(volatile u_##TYPE *p) 148 #define ATOMIC_STORE(TYPE) \ 149 void atomic_store_rel_##TYPE(volatile u_##TYPE *p, u_##TYPE v) 150 151 #else /* !KLD_MODULE && __GNUCLIKE_ASM */ 152 153 /* 154 * For userland, always use lock prefixes so that the binaries will run 155 * on both SMP and !SMP systems. 156 */ 157 #if defined(SMP) || !defined(_KERNEL) || defined(KLD_MODULE) 158 #define MPLOCKED "lock ; " 159 #else 160 #define MPLOCKED 161 #endif 162 163 /* 164 * The assembly is volatilized to avoid code chunk removal by the compiler. 165 * GCC aggressively reorders operations and memory clobbering is necessary 166 * in order to avoid that for memory barriers. 167 */ 168 #define ATOMIC_ASM(NAME, TYPE, OP, CONS, V) \ 169 static __inline void \ 170 atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ 171 { \ 172 __asm __volatile(MPLOCKED OP \ 173 : "+m" (*p) \ 174 : CONS (V) \ 175 : "cc"); \ 176 } \ 177 \ 178 static __inline void \ 179 atomic_##NAME##_barr_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ 180 { \ 181 __asm __volatile(MPLOCKED OP \ 182 : "+m" (*p) \ 183 : CONS (V) \ 184 : "memory", "cc"); \ 185 } \ 186 struct __hack 187 188 /* 189 * Atomic compare and set, used by the mutex functions. 190 * 191 * cmpset: 192 * if (*dst == expect) 193 * *dst = src 194 * 195 * fcmpset: 196 * if (*dst == *expect) 197 * *dst = src 198 * else 199 * *expect = *dst 200 * 201 * Returns 0 on failure, non-zero on success. 202 */ 203 #define ATOMIC_CMPSET(TYPE) \ 204 static __inline int \ 205 atomic_cmpset_##TYPE(volatile u_##TYPE *dst, u_##TYPE expect, u_##TYPE src) \ 206 { \ 207 u_char res; \ 208 \ 209 __asm __volatile( \ 210 " " MPLOCKED " " \ 211 " cmpxchg %3,%1 ; " \ 212 "# atomic_cmpset_" #TYPE " " \ 213 : "=@cce" (res), /* 0 */ \ 214 "+m" (*dst), /* 1 */ \ 215 "+a" (expect) /* 2 */ \ 216 : "r" (src) /* 3 */ \ 217 : "memory", "cc"); \ 218 return (res); \ 219 } \ 220 \ 221 static __inline int \ 222 atomic_fcmpset_##TYPE(volatile u_##TYPE *dst, u_##TYPE *expect, u_##TYPE src) \ 223 { \ 224 u_char res; \ 225 \ 226 __asm __volatile( \ 227 " " MPLOCKED " " \ 228 " cmpxchg %3,%1 ; " \ 229 "# atomic_fcmpset_" #TYPE " " \ 230 : "=@cce" (res), /* 0 */ \ 231 "+m" (*dst), /* 1 */ \ 232 "+a" (*expect) /* 2 */ \ 233 : "r" (src) /* 3 */ \ 234 : "memory", "cc"); \ 235 return (res); \ 236 } 237 238 ATOMIC_CMPSET(char); 239 ATOMIC_CMPSET(short); 240 ATOMIC_CMPSET(int); 241 ATOMIC_CMPSET(long); 242 243 /* 244 * Atomically add the value of v to the integer pointed to by p and return 245 * the previous value of *p. 246 */ 247 static __inline u_int 248 atomic_fetchadd_int(volatile u_int *p, u_int v) 249 { 250 251 __asm __volatile( 252 " " MPLOCKED " " 253 " xaddl %0,%1 ; " 254 "# atomic_fetchadd_int" 255 : "+r" (v), /* 0 */ 256 "+m" (*p) /* 1 */ 257 : : "cc"); 258 return (v); 259 } 260 261 /* 262 * Atomically add the value of v to the long integer pointed to by p and return 263 * the previous value of *p. 264 */ 265 static __inline u_long 266 atomic_fetchadd_long(volatile u_long *p, u_long v) 267 { 268 269 __asm __volatile( 270 " " MPLOCKED " " 271 " xaddq %0,%1 ; " 272 "# atomic_fetchadd_long" 273 : "+r" (v), /* 0 */ 274 "+m" (*p) /* 1 */ 275 : : "cc"); 276 return (v); 277 } 278 279 static __inline int 280 atomic_testandset_int(volatile u_int *p, u_int v) 281 { 282 u_char res; 283 284 __asm __volatile( 285 " " MPLOCKED " " 286 " btsl %2,%1 ; " 287 "# atomic_testandset_int" 288 : "=@ccc" (res), /* 0 */ 289 "+m" (*p) /* 1 */ 290 : "Ir" (v & 0x1f) /* 2 */ 291 : "cc"); 292 return (res); 293 } 294 295 static __inline int 296 atomic_testandset_long(volatile u_long *p, u_int v) 297 { 298 u_char res; 299 300 __asm __volatile( 301 " " MPLOCKED " " 302 " btsq %2,%1 ; " 303 "# atomic_testandset_long" 304 : "=@ccc" (res), /* 0 */ 305 "+m" (*p) /* 1 */ 306 : "Jr" ((u_long)(v & 0x3f)) /* 2 */ 307 : "cc"); 308 return (res); 309 } 310 311 static __inline int 312 atomic_testandclear_int(volatile u_int *p, u_int v) 313 { 314 u_char res; 315 316 __asm __volatile( 317 " " MPLOCKED " " 318 " btrl %2,%1 ; " 319 "# atomic_testandclear_int" 320 : "=@ccc" (res), /* 0 */ 321 "+m" (*p) /* 1 */ 322 : "Ir" (v & 0x1f) /* 2 */ 323 : "cc"); 324 return (res); 325 } 326 327 static __inline int 328 atomic_testandclear_long(volatile u_long *p, u_int v) 329 { 330 u_char res; 331 332 __asm __volatile( 333 " " MPLOCKED " " 334 " btrq %2,%1 ; " 335 "# atomic_testandclear_long" 336 : "=@ccc" (res), /* 0 */ 337 "+m" (*p) /* 1 */ 338 : "Jr" ((u_long)(v & 0x3f)) /* 2 */ 339 : "cc"); 340 return (res); 341 } 342 343 /* 344 * We assume that a = b will do atomic loads and stores. Due to the 345 * IA32 memory model, a simple store guarantees release semantics. 346 * 347 * However, a load may pass a store if they are performed on distinct 348 * addresses, so we need a Store/Load barrier for sequentially 349 * consistent fences in SMP kernels. We use "lock addl $0,mem" for a 350 * Store/Load barrier, as recommended by the AMD Software Optimization 351 * Guide, and not mfence. To avoid false data dependencies, we use a 352 * special address for "mem". In the kernel, we use a private per-cpu 353 * cache line. In user space, we use a word in the stack's red zone 354 * (-8(%rsp)). 355 * 356 * For UP kernels, however, the memory of the single processor is 357 * always consistent, so we only need to stop the compiler from 358 * reordering accesses in a way that violates the semantics of acquire 359 * and release. 360 */ 361 362 #if defined(_KERNEL) 363 364 #if defined(SMP) || defined(KLD_MODULE) 365 static __inline void 366 __storeload_barrier(void) 367 { 368 369 __asm __volatile("lock; addl $0,%%gs:%0" 370 : "+m" (*(u_int *)OFFSETOF_MONITORBUF) : : "memory", "cc"); 371 } 372 #else /* _KERNEL && UP */ 373 static __inline void 374 __storeload_barrier(void) 375 { 376 377 __compiler_membar(); 378 } 379 #endif /* SMP */ 380 #else /* !_KERNEL */ 381 static __inline void 382 __storeload_barrier(void) 383 { 384 385 __asm __volatile("lock; addl $0,-8(%%rsp)" : : : "memory", "cc"); 386 } 387 #endif /* _KERNEL*/ 388 389 #define ATOMIC_LOAD(TYPE) \ 390 static __inline u_##TYPE \ 391 atomic_load_acq_##TYPE(volatile u_##TYPE *p) \ 392 { \ 393 u_##TYPE res; \ 394 \ 395 res = *p; \ 396 __compiler_membar(); \ 397 return (res); \ 398 } \ 399 struct __hack 400 401 #define ATOMIC_STORE(TYPE) \ 402 static __inline void \ 403 atomic_store_rel_##TYPE(volatile u_##TYPE *p, u_##TYPE v) \ 404 { \ 405 \ 406 __compiler_membar(); \ 407 *p = v; \ 408 } \ 409 struct __hack 410 411 static __inline void 412 atomic_thread_fence_acq(void) 413 { 414 415 __compiler_membar(); 416 } 417 418 static __inline void 419 atomic_thread_fence_rel(void) 420 { 421 422 __compiler_membar(); 423 } 424 425 static __inline void 426 atomic_thread_fence_acq_rel(void) 427 { 428 429 __compiler_membar(); 430 } 431 432 static __inline void 433 atomic_thread_fence_seq_cst(void) 434 { 435 436 __storeload_barrier(); 437 } 438 439 #endif /* KLD_MODULE || !__GNUCLIKE_ASM */ 440 441 ATOMIC_ASM(set, char, "orb %b1,%0", "iq", v); 442 ATOMIC_ASM(clear, char, "andb %b1,%0", "iq", ~v); 443 ATOMIC_ASM(add, char, "addb %b1,%0", "iq", v); 444 ATOMIC_ASM(subtract, char, "subb %b1,%0", "iq", v); 445 446 ATOMIC_ASM(set, short, "orw %w1,%0", "ir", v); 447 ATOMIC_ASM(clear, short, "andw %w1,%0", "ir", ~v); 448 ATOMIC_ASM(add, short, "addw %w1,%0", "ir", v); 449 ATOMIC_ASM(subtract, short, "subw %w1,%0", "ir", v); 450 451 ATOMIC_ASM(set, int, "orl %1,%0", "ir", v); 452 ATOMIC_ASM(clear, int, "andl %1,%0", "ir", ~v); 453 ATOMIC_ASM(add, int, "addl %1,%0", "ir", v); 454 ATOMIC_ASM(subtract, int, "subl %1,%0", "ir", v); 455 456 ATOMIC_ASM(set, long, "orq %1,%0", "er", v); 457 ATOMIC_ASM(clear, long, "andq %1,%0", "er", ~v); 458 ATOMIC_ASM(add, long, "addq %1,%0", "er", v); 459 ATOMIC_ASM(subtract, long, "subq %1,%0", "er", v); 460 461 #define ATOMIC_LOADSTORE(TYPE) \ 462 ATOMIC_LOAD(TYPE); \ 463 ATOMIC_STORE(TYPE) 464 465 ATOMIC_LOADSTORE(char); 466 ATOMIC_LOADSTORE(short); 467 ATOMIC_LOADSTORE(int); 468 ATOMIC_LOADSTORE(long); 469 470 #undef ATOMIC_ASM 471 #undef ATOMIC_LOAD 472 #undef ATOMIC_STORE 473 #undef ATOMIC_LOADSTORE 474 #ifndef WANT_FUNCTIONS 475 476 /* Read the current value and store a new value in the destination. */ 477 #ifdef __GNUCLIKE_ASM 478 479 static __inline u_int 480 atomic_swap_int(volatile u_int *p, u_int v) 481 { 482 483 __asm __volatile( 484 " xchgl %1,%0 ; " 485 "# atomic_swap_int" 486 : "+r" (v), /* 0 */ 487 "+m" (*p)); /* 1 */ 488 return (v); 489 } 490 491 static __inline u_long 492 atomic_swap_long(volatile u_long *p, u_long v) 493 { 494 495 __asm __volatile( 496 " xchgq %1,%0 ; " 497 "# atomic_swap_long" 498 : "+r" (v), /* 0 */ 499 "+m" (*p)); /* 1 */ 500 return (v); 501 } 502 503 #else /* !__GNUCLIKE_ASM */ 504 505 u_int atomic_swap_int(volatile u_int *p, u_int v); 506 u_long atomic_swap_long(volatile u_long *p, u_long v); 507 508 #endif /* __GNUCLIKE_ASM */ 509 510 #define atomic_set_acq_char atomic_set_barr_char 511 #define atomic_set_rel_char atomic_set_barr_char 512 #define atomic_clear_acq_char atomic_clear_barr_char 513 #define atomic_clear_rel_char atomic_clear_barr_char 514 #define atomic_add_acq_char atomic_add_barr_char 515 #define atomic_add_rel_char atomic_add_barr_char 516 #define atomic_subtract_acq_char atomic_subtract_barr_char 517 #define atomic_subtract_rel_char atomic_subtract_barr_char 518 #define atomic_cmpset_acq_char atomic_cmpset_char 519 #define atomic_cmpset_rel_char atomic_cmpset_char 520 #define atomic_fcmpset_acq_char atomic_fcmpset_char 521 #define atomic_fcmpset_rel_char atomic_fcmpset_char 522 523 #define atomic_set_acq_short atomic_set_barr_short 524 #define atomic_set_rel_short atomic_set_barr_short 525 #define atomic_clear_acq_short atomic_clear_barr_short 526 #define atomic_clear_rel_short atomic_clear_barr_short 527 #define atomic_add_acq_short atomic_add_barr_short 528 #define atomic_add_rel_short atomic_add_barr_short 529 #define atomic_subtract_acq_short atomic_subtract_barr_short 530 #define atomic_subtract_rel_short atomic_subtract_barr_short 531 #define atomic_cmpset_acq_short atomic_cmpset_short 532 #define atomic_cmpset_rel_short atomic_cmpset_short 533 #define atomic_fcmpset_acq_short atomic_fcmpset_short 534 #define atomic_fcmpset_rel_short atomic_fcmpset_short 535 536 #define atomic_set_acq_int atomic_set_barr_int 537 #define atomic_set_rel_int atomic_set_barr_int 538 #define atomic_clear_acq_int atomic_clear_barr_int 539 #define atomic_clear_rel_int atomic_clear_barr_int 540 #define atomic_add_acq_int atomic_add_barr_int 541 #define atomic_add_rel_int atomic_add_barr_int 542 #define atomic_subtract_acq_int atomic_subtract_barr_int 543 #define atomic_subtract_rel_int atomic_subtract_barr_int 544 #define atomic_cmpset_acq_int atomic_cmpset_int 545 #define atomic_cmpset_rel_int atomic_cmpset_int 546 #define atomic_fcmpset_acq_int atomic_fcmpset_int 547 #define atomic_fcmpset_rel_int atomic_fcmpset_int 548 549 #define atomic_set_acq_long atomic_set_barr_long 550 #define atomic_set_rel_long atomic_set_barr_long 551 #define atomic_clear_acq_long atomic_clear_barr_long 552 #define atomic_clear_rel_long atomic_clear_barr_long 553 #define atomic_add_acq_long atomic_add_barr_long 554 #define atomic_add_rel_long atomic_add_barr_long 555 #define atomic_subtract_acq_long atomic_subtract_barr_long 556 #define atomic_subtract_rel_long atomic_subtract_barr_long 557 #define atomic_cmpset_acq_long atomic_cmpset_long 558 #define atomic_cmpset_rel_long atomic_cmpset_long 559 #define atomic_fcmpset_acq_long atomic_fcmpset_long 560 #define atomic_fcmpset_rel_long atomic_fcmpset_long 561 562 #define atomic_readandclear_int(p) atomic_swap_int(p, 0) 563 #define atomic_readandclear_long(p) atomic_swap_long(p, 0) 564 #define atomic_testandset_acq_long atomic_testandset_long 565 566 /* Operations on 8-bit bytes. */ 567 #define atomic_set_8 atomic_set_char 568 #define atomic_set_acq_8 atomic_set_acq_char 569 #define atomic_set_rel_8 atomic_set_rel_char 570 #define atomic_clear_8 atomic_clear_char 571 #define atomic_clear_acq_8 atomic_clear_acq_char 572 #define atomic_clear_rel_8 atomic_clear_rel_char 573 #define atomic_add_8 atomic_add_char 574 #define atomic_add_acq_8 atomic_add_acq_char 575 #define atomic_add_rel_8 atomic_add_rel_char 576 #define atomic_subtract_8 atomic_subtract_char 577 #define atomic_subtract_acq_8 atomic_subtract_acq_char 578 #define atomic_subtract_rel_8 atomic_subtract_rel_char 579 #define atomic_load_acq_8 atomic_load_acq_char 580 #define atomic_store_rel_8 atomic_store_rel_char 581 #define atomic_cmpset_8 atomic_cmpset_char 582 #define atomic_cmpset_acq_8 atomic_cmpset_acq_char 583 #define atomic_cmpset_rel_8 atomic_cmpset_rel_char 584 #define atomic_fcmpset_8 atomic_fcmpset_char 585 #define atomic_fcmpset_acq_8 atomic_fcmpset_acq_char 586 #define atomic_fcmpset_rel_8 atomic_fcmpset_rel_char 587 588 /* Operations on 16-bit words. */ 589 #define atomic_set_16 atomic_set_short 590 #define atomic_set_acq_16 atomic_set_acq_short 591 #define atomic_set_rel_16 atomic_set_rel_short 592 #define atomic_clear_16 atomic_clear_short 593 #define atomic_clear_acq_16 atomic_clear_acq_short 594 #define atomic_clear_rel_16 atomic_clear_rel_short 595 #define atomic_add_16 atomic_add_short 596 #define atomic_add_acq_16 atomic_add_acq_short 597 #define atomic_add_rel_16 atomic_add_rel_short 598 #define atomic_subtract_16 atomic_subtract_short 599 #define atomic_subtract_acq_16 atomic_subtract_acq_short 600 #define atomic_subtract_rel_16 atomic_subtract_rel_short 601 #define atomic_load_acq_16 atomic_load_acq_short 602 #define atomic_store_rel_16 atomic_store_rel_short 603 #define atomic_cmpset_16 atomic_cmpset_short 604 #define atomic_cmpset_acq_16 atomic_cmpset_acq_short 605 #define atomic_cmpset_rel_16 atomic_cmpset_rel_short 606 #define atomic_fcmpset_16 atomic_fcmpset_short 607 #define atomic_fcmpset_acq_16 atomic_fcmpset_acq_short 608 #define atomic_fcmpset_rel_16 atomic_fcmpset_rel_short 609 610 /* Operations on 32-bit double words. */ 611 #define atomic_set_32 atomic_set_int 612 #define atomic_set_acq_32 atomic_set_acq_int 613 #define atomic_set_rel_32 atomic_set_rel_int 614 #define atomic_clear_32 atomic_clear_int 615 #define atomic_clear_acq_32 atomic_clear_acq_int 616 #define atomic_clear_rel_32 atomic_clear_rel_int 617 #define atomic_add_32 atomic_add_int 618 #define atomic_add_acq_32 atomic_add_acq_int 619 #define atomic_add_rel_32 atomic_add_rel_int 620 #define atomic_subtract_32 atomic_subtract_int 621 #define atomic_subtract_acq_32 atomic_subtract_acq_int 622 #define atomic_subtract_rel_32 atomic_subtract_rel_int 623 #define atomic_load_acq_32 atomic_load_acq_int 624 #define atomic_store_rel_32 atomic_store_rel_int 625 #define atomic_cmpset_32 atomic_cmpset_int 626 #define atomic_cmpset_acq_32 atomic_cmpset_acq_int 627 #define atomic_cmpset_rel_32 atomic_cmpset_rel_int 628 #define atomic_fcmpset_32 atomic_fcmpset_int 629 #define atomic_fcmpset_acq_32 atomic_fcmpset_acq_int 630 #define atomic_fcmpset_rel_32 atomic_fcmpset_rel_int 631 #define atomic_swap_32 atomic_swap_int 632 #define atomic_readandclear_32 atomic_readandclear_int 633 #define atomic_fetchadd_32 atomic_fetchadd_int 634 #define atomic_testandset_32 atomic_testandset_int 635 #define atomic_testandclear_32 atomic_testandclear_int 636 637 /* Operations on 64-bit quad words. */ 638 #define atomic_set_64 atomic_set_long 639 #define atomic_set_acq_64 atomic_set_acq_long 640 #define atomic_set_rel_64 atomic_set_rel_long 641 #define atomic_clear_64 atomic_clear_long 642 #define atomic_clear_acq_64 atomic_clear_acq_long 643 #define atomic_clear_rel_64 atomic_clear_rel_long 644 #define atomic_add_64 atomic_add_long 645 #define atomic_add_acq_64 atomic_add_acq_long 646 #define atomic_add_rel_64 atomic_add_rel_long 647 #define atomic_subtract_64 atomic_subtract_long 648 #define atomic_subtract_acq_64 atomic_subtract_acq_long 649 #define atomic_subtract_rel_64 atomic_subtract_rel_long 650 #define atomic_load_acq_64 atomic_load_acq_long 651 #define atomic_store_rel_64 atomic_store_rel_long 652 #define atomic_cmpset_64 atomic_cmpset_long 653 #define atomic_cmpset_acq_64 atomic_cmpset_acq_long 654 #define atomic_cmpset_rel_64 atomic_cmpset_rel_long 655 #define atomic_fcmpset_64 atomic_fcmpset_long 656 #define atomic_fcmpset_acq_64 atomic_fcmpset_acq_long 657 #define atomic_fcmpset_rel_64 atomic_fcmpset_rel_long 658 #define atomic_swap_64 atomic_swap_long 659 #define atomic_readandclear_64 atomic_readandclear_long 660 #define atomic_fetchadd_64 atomic_fetchadd_long 661 #define atomic_testandset_64 atomic_testandset_long 662 #define atomic_testandclear_64 atomic_testandclear_long 663 664 /* Operations on pointers. */ 665 #define atomic_set_ptr atomic_set_long 666 #define atomic_set_acq_ptr atomic_set_acq_long 667 #define atomic_set_rel_ptr atomic_set_rel_long 668 #define atomic_clear_ptr atomic_clear_long 669 #define atomic_clear_acq_ptr atomic_clear_acq_long 670 #define atomic_clear_rel_ptr atomic_clear_rel_long 671 #define atomic_add_ptr atomic_add_long 672 #define atomic_add_acq_ptr atomic_add_acq_long 673 #define atomic_add_rel_ptr atomic_add_rel_long 674 #define atomic_subtract_ptr atomic_subtract_long 675 #define atomic_subtract_acq_ptr atomic_subtract_acq_long 676 #define atomic_subtract_rel_ptr atomic_subtract_rel_long 677 #define atomic_load_acq_ptr atomic_load_acq_long 678 #define atomic_store_rel_ptr atomic_store_rel_long 679 #define atomic_cmpset_ptr atomic_cmpset_long 680 #define atomic_cmpset_acq_ptr atomic_cmpset_acq_long 681 #define atomic_cmpset_rel_ptr atomic_cmpset_rel_long 682 #define atomic_fcmpset_ptr atomic_fcmpset_long 683 #define atomic_fcmpset_acq_ptr atomic_fcmpset_acq_long 684 #define atomic_fcmpset_rel_ptr atomic_fcmpset_rel_long 685 #define atomic_swap_ptr atomic_swap_long 686 #define atomic_readandclear_ptr atomic_readandclear_long 687 688 #endif /* !WANT_FUNCTIONS */ 689 690 #endif /* !ATOMIC_SAN_PREFIX */ 691 692 #endif /* !_MACHINE_ATOMIC_H_ */ 693