atomic.h revision 254617
138517Sdfr/*- 238517Sdfr * Copyright (c) 1998 Doug Rabson 338517Sdfr * All rights reserved. 438517Sdfr * 538517Sdfr * Redistribution and use in source and binary forms, with or without 638517Sdfr * modification, are permitted provided that the following conditions 738517Sdfr * are met: 838517Sdfr * 1. Redistributions of source code must retain the above copyright 938517Sdfr * notice, this list of conditions and the following disclaimer. 1038517Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1138517Sdfr * notice, this list of conditions and the following disclaimer in the 1238517Sdfr * documentation and/or other materials provided with the distribution. 1338517Sdfr * 1438517Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1538517Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1638517Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1738517Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1838517Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1938517Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2038517Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2138517Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2238517Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2338517Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2438517Sdfr * SUCH DAMAGE. 2538517Sdfr * 2650477Speter * $FreeBSD: head/sys/i386/include/atomic.h 254617 2013-08-21 22:03:06Z jkim $ 2738517Sdfr */ 2838517Sdfr#ifndef _MACHINE_ATOMIC_H_ 29147855Sjhb#define _MACHINE_ATOMIC_H_ 3038517Sdfr 31143063Sjoerg#ifndef _SYS_CDEFS_H_ 32143063Sjoerg#error this file needs sys/cdefs.h as a prerequisite 33143063Sjoerg#endif 34143063Sjoerg 35236456Skib#define mb() __asm __volatile("lock; addl $0,(%%esp)" : : : "memory", "cc") 36236456Skib#define wmb() __asm __volatile("lock; addl $0,(%%esp)" : : : "memory", "cc") 37236456Skib#define rmb() __asm __volatile("lock; addl $0,(%%esp)" : : : "memory", "cc") 38185162Skmacy 3938517Sdfr/* 40165635Sbde * Various simple operations on memory, each of which is atomic in the 41165635Sbde * presence of interrupts and multiple processors. 4238517Sdfr * 43165633Sbde * atomic_set_char(P, V) (*(u_char *)(P) |= (V)) 44165633Sbde * atomic_clear_char(P, V) (*(u_char *)(P) &= ~(V)) 45165633Sbde * atomic_add_char(P, V) (*(u_char *)(P) += (V)) 46165633Sbde * atomic_subtract_char(P, V) (*(u_char *)(P) -= (V)) 4748797Salc * 48165633Sbde * atomic_set_short(P, V) (*(u_short *)(P) |= (V)) 49165633Sbde * atomic_clear_short(P, V) (*(u_short *)(P) &= ~(V)) 50165633Sbde * atomic_add_short(P, V) (*(u_short *)(P) += (V)) 51165633Sbde * atomic_subtract_short(P, V) (*(u_short *)(P) -= (V)) 5248797Salc * 53165633Sbde * atomic_set_int(P, V) (*(u_int *)(P) |= (V)) 54165633Sbde * atomic_clear_int(P, V) (*(u_int *)(P) &= ~(V)) 55165633Sbde * atomic_add_int(P, V) (*(u_int *)(P) += (V)) 56165633Sbde * atomic_subtract_int(P, V) (*(u_int *)(P) -= (V)) 57254617Sjkim * atomic_swap_int(P, V) (return (*(u_int *)(P)); *(u_int *)(P) = (V);) 58165635Sbde * atomic_readandclear_int(P) (return (*(u_int *)(P)); *(u_int *)(P) = 0;) 5948797Salc * 60165633Sbde * atomic_set_long(P, V) (*(u_long *)(P) |= (V)) 61165633Sbde * atomic_clear_long(P, V) (*(u_long *)(P) &= ~(V)) 62165633Sbde * atomic_add_long(P, V) (*(u_long *)(P) += (V)) 63165633Sbde * atomic_subtract_long(P, V) (*(u_long *)(P) -= (V)) 64254617Sjkim * atomic_swap_long(P, V) (return (*(u_long *)(P)); *(u_long *)(P) = (V);) 65165635Sbde * atomic_readandclear_long(P) (return (*(u_long *)(P)); *(u_long *)(P) = 0;) 6638517Sdfr */ 6738517Sdfr 6848797Salc/* 6949999Salc * The above functions are expanded inline in the statically-linked 7049999Salc * kernel. Lock prefixes are generated if an SMP kernel is being 7149999Salc * built. 7249999Salc * 7349999Salc * Kernel modules call real functions which are built into the kernel. 7449999Salc * This allows kernel modules to be portable between UP and SMP systems. 7548797Salc */ 76147855Sjhb#if defined(KLD_MODULE) || !defined(__GNUCLIKE_ASM) 77147855Sjhb#define ATOMIC_ASM(NAME, TYPE, OP, CONS, V) \ 78197803Sattiliovoid atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v); \ 79197803Sattiliovoid atomic_##NAME##_barr_##TYPE(volatile u_##TYPE *p, u_##TYPE v) 8049999Salc 81208332Sphkint atomic_cmpset_int(volatile u_int *dst, u_int expect, u_int src); 82165633Sbdeu_int atomic_fetchadd_int(volatile u_int *p, u_int v); 83254617Sjkimint atomic_testandset_int(volatile u_int *p, u_int v); 8465514Sphk 85236456Skib#define ATOMIC_LOAD(TYPE, LOP) \ 86236456Skibu_##TYPE atomic_load_acq_##TYPE(volatile u_##TYPE *p) 87236456Skib#define ATOMIC_STORE(TYPE) \ 88100251Smarkmvoid atomic_store_rel_##TYPE(volatile u_##TYPE *p, u_##TYPE v) 8971085Sjhb 90147855Sjhb#else /* !KLD_MODULE && __GNUCLIKE_ASM */ 9172358Smarkm 9284679Sjhb/* 93165635Sbde * For userland, always use lock prefixes so that the binaries will run 94165635Sbde * on both SMP and !SMP systems. 9584679Sjhb */ 9684679Sjhb#if defined(SMP) || !defined(_KERNEL) 97165630Sbde#define MPLOCKED "lock ; " 9890515Sbde#else 99147855Sjhb#define MPLOCKED 10090515Sbde#endif 10138517Sdfr 10248797Salc/* 103197803Sattilio * The assembly is volatilized to avoid code chunk removal by the compiler. 104197803Sattilio * GCC aggressively reorders operations and memory clobbering is necessary 105197803Sattilio * in order to avoid that for memory barriers. 10648797Salc */ 107147855Sjhb#define ATOMIC_ASM(NAME, TYPE, OP, CONS, V) \ 10848797Salcstatic __inline void \ 10949043Salcatomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ 11048797Salc{ \ 111165630Sbde __asm __volatile(MPLOCKED OP \ 112254612Sjkim : "+m" (*p) \ 113254612Sjkim : CONS (V) \ 114216524Skib : "cc"); \ 115122827Sbde} \ 116197803Sattilio \ 117197803Sattiliostatic __inline void \ 118197803Sattilioatomic_##NAME##_barr_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ 119197803Sattilio{ \ 120197803Sattilio __asm __volatile(MPLOCKED OP \ 121254612Sjkim : "+m" (*p) \ 122254612Sjkim : CONS (V) \ 123216524Skib : "memory", "cc"); \ 124197803Sattilio} \ 125122827Sbdestruct __hack 126100327Smarkm 127220404Sjkim#if defined(_KERNEL) && !defined(WANT_FUNCTIONS) 128220404Sjkim 129220404Sjkim/* I486 does not support SMP or CMPXCHG8B. */ 130220404Sjkimstatic __inline uint64_t 131220404Sjkimatomic_load_acq_64_i386(volatile uint64_t *p) 132220404Sjkim{ 133220404Sjkim volatile uint32_t *high, *low; 134220404Sjkim uint64_t res; 135220404Sjkim 136220404Sjkim low = (volatile uint32_t *)p; 137220404Sjkim high = (volatile uint32_t *)p + 1; 138220404Sjkim __asm __volatile( 139220404Sjkim " pushfl ; " 140220404Sjkim " cli ; " 141220404Sjkim " movl %1,%%eax ; " 142220404Sjkim " movl %2,%%edx ; " 143220404Sjkim " popfl" 144220404Sjkim : "=&A" (res) /* 0 */ 145220404Sjkim : "m" (*low), /* 1 */ 146220404Sjkim "m" (*high) /* 2 */ 147220404Sjkim : "memory"); 148220404Sjkim 149220404Sjkim return (res); 150220404Sjkim} 151220404Sjkim 152220404Sjkimstatic __inline void 153220404Sjkimatomic_store_rel_64_i386(volatile uint64_t *p, uint64_t v) 154220404Sjkim{ 155220404Sjkim volatile uint32_t *high, *low; 156220404Sjkim 157220404Sjkim low = (volatile uint32_t *)p; 158220404Sjkim high = (volatile uint32_t *)p + 1; 159220404Sjkim __asm __volatile( 160220404Sjkim " pushfl ; " 161220404Sjkim " cli ; " 162220404Sjkim " movl %%eax,%0 ; " 163220404Sjkim " movl %%edx,%1 ; " 164220404Sjkim " popfl" 165220404Sjkim : "=m" (*low), /* 0 */ 166220404Sjkim "=m" (*high) /* 1 */ 167220404Sjkim : "A" (v) /* 2 */ 168220404Sjkim : "memory"); 169220404Sjkim} 170220404Sjkim 171220404Sjkimstatic __inline uint64_t 172220404Sjkimatomic_load_acq_64_i586(volatile uint64_t *p) 173220404Sjkim{ 174220404Sjkim uint64_t res; 175220404Sjkim 176220404Sjkim __asm __volatile( 177220404Sjkim " movl %%ebx,%%eax ; " 178220404Sjkim " movl %%ecx,%%edx ; " 179220404Sjkim " " MPLOCKED " " 180254612Sjkim " cmpxchg8b %1" 181220404Sjkim : "=&A" (res), /* 0 */ 182254612Sjkim "+m" (*p) /* 1 */ 183254612Sjkim : : "memory", "cc"); 184220404Sjkim 185220404Sjkim return (res); 186220404Sjkim} 187220404Sjkim 188220404Sjkimstatic __inline void 189220404Sjkimatomic_store_rel_64_i586(volatile uint64_t *p, uint64_t v) 190220404Sjkim{ 191220404Sjkim 192220404Sjkim __asm __volatile( 193220404Sjkim " movl %%eax,%%ebx ; " 194220404Sjkim " movl %%edx,%%ecx ; " 195220404Sjkim "1: " 196220404Sjkim " " MPLOCKED " " 197254612Sjkim " cmpxchg8b %0 ; " 198220404Sjkim " jne 1b" 199254612Sjkim : "+m" (*p), /* 0 */ 200220404Sjkim "+A" (v) /* 1 */ 201254612Sjkim : : "ebx", "ecx", "memory", "cc"); 202220404Sjkim} 203220404Sjkim 204220404Sjkim#endif /* _KERNEL && !WANT_FUNCTIONS */ 205220404Sjkim 20665514Sphk/* 20765514Sphk * Atomic compare and set, used by the mutex functions 20865514Sphk * 209208332Sphk * if (*dst == expect) *dst = src (all 32 bit words) 21065514Sphk * 21165514Sphk * Returns 0 on failure, non-zero on success 21265514Sphk */ 21365514Sphk 214165635Sbde#ifdef CPU_DISABLE_CMPXCHG 215100327Smarkm 216197910Sattiliostatic __inline int 217208332Sphkatomic_cmpset_int(volatile u_int *dst, u_int expect, u_int src) 218197910Sattilio{ 219197910Sattilio u_char res; 22065514Sphk 221197910Sattilio __asm __volatile( 222197910Sattilio " pushfl ; " 223197910Sattilio " cli ; " 224254612Sjkim " cmpl %3,%1 ; " 225197910Sattilio " jne 1f ; " 226197910Sattilio " movl %2,%1 ; " 227197910Sattilio "1: " 228197910Sattilio " sete %0 ; " 229197910Sattilio " popfl ; " 230197910Sattilio "# atomic_cmpset_int" 231197910Sattilio : "=q" (res), /* 0 */ 232254612Sjkim "+m" (*dst) /* 1 */ 233197910Sattilio : "r" (src), /* 2 */ 234254612Sjkim "r" (expect) /* 3 */ 235197910Sattilio : "memory"); 236197910Sattilio 237197910Sattilio return (res); 238197910Sattilio} 239197910Sattilio 240165635Sbde#else /* !CPU_DISABLE_CMPXCHG */ 241100327Smarkm 242197910Sattiliostatic __inline int 243208332Sphkatomic_cmpset_int(volatile u_int *dst, u_int expect, u_int src) 244197910Sattilio{ 245197910Sattilio u_char res; 24665514Sphk 247197910Sattilio __asm __volatile( 248197910Sattilio " " MPLOCKED " " 249254614Sjkim " cmpxchgl %3,%1 ; " 250197910Sattilio " sete %0 ; " 251197910Sattilio "# atomic_cmpset_int" 252254614Sjkim : "=q" (res), /* 0 */ 253254614Sjkim "+m" (*dst), /* 1 */ 254254614Sjkim "+a" (expect) /* 2 */ 255254614Sjkim : "r" (src) /* 3 */ 256216524Skib : "memory", "cc"); 257197910Sattilio 258197910Sattilio return (res); 259197910Sattilio} 260197910Sattilio 261165635Sbde#endif /* CPU_DISABLE_CMPXCHG */ 262100327Smarkm 263150627Sjhb/* 264150627Sjhb * Atomically add the value of v to the integer pointed to by p and return 265150627Sjhb * the previous value of *p. 266150627Sjhb */ 267150627Sjhbstatic __inline u_int 268150627Sjhbatomic_fetchadd_int(volatile u_int *p, u_int v) 269150627Sjhb{ 270150627Sjhb 271165633Sbde __asm __volatile( 272165630Sbde " " MPLOCKED " " 273254610Sjkim " xaddl %0,%1 ; " 274150627Sjhb "# atomic_fetchadd_int" 275254610Sjkim : "+r" (v), /* 0 */ 276254612Sjkim "+m" (*p) /* 1 */ 277254612Sjkim : : "cc"); 278150627Sjhb return (v); 279150627Sjhb} 280150627Sjhb 281254617Sjkimstatic __inline int 282254617Sjkimatomic_testandset_int(volatile u_int *p, u_int v) 283254617Sjkim{ 284254617Sjkim u_char res; 285254617Sjkim 286254617Sjkim __asm __volatile( 287254617Sjkim " " MPLOCKED " " 288254617Sjkim " btsl %2,%1 ; " 289254617Sjkim " setc %0 ; " 290254617Sjkim "# atomic_testandset_int" 291254617Sjkim : "=q" (res), /* 0 */ 292254617Sjkim "+m" (*p) /* 1 */ 293254617Sjkim : "Ir" (v & 0x1f) /* 2 */ 294254617Sjkim : "cc"); 295254617Sjkim return (res); 296254617Sjkim} 297254617Sjkim 298236456Skib/* 299236456Skib * We assume that a = b will do atomic loads and stores. Due to the 300236456Skib * IA32 memory model, a simple store guarantees release semantics. 301236456Skib * 302236456Skib * However, loads may pass stores, so for atomic_load_acq we have to 303236456Skib * ensure a Store/Load barrier to do the load in SMP kernels. We use 304236456Skib * "lock cmpxchg" as recommended by the AMD Software Optimization 305236456Skib * Guide, and not mfence. For UP kernels, however, the cache of the 306236456Skib * single processor is always consistent, so we only need to take care 307236456Skib * of the compiler. 308236456Skib */ 309236456Skib#define ATOMIC_STORE(TYPE) \ 310236456Skibstatic __inline void \ 311236456Skibatomic_store_rel_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ 312236456Skib{ \ 313241374Sattilio __compiler_membar(); \ 314236456Skib *p = v; \ 315236456Skib} \ 316236456Skibstruct __hack 317236456Skib 318137623Sjhb#if defined(_KERNEL) && !defined(SMP) 319100327Smarkm 320236456Skib#define ATOMIC_LOAD(TYPE, LOP) \ 32167351Sjhbstatic __inline u_##TYPE \ 32267351Sjhbatomic_load_acq_##TYPE(volatile u_##TYPE *p) \ 32367351Sjhb{ \ 324197803Sattilio u_##TYPE tmp; \ 325197803Sattilio \ 326197803Sattilio tmp = *p; \ 327241374Sattilio __compiler_membar(); \ 328197803Sattilio return (tmp); \ 32967351Sjhb} \ 330122827Sbdestruct __hack 331100327Smarkm 332165635Sbde#else /* !(_KERNEL && !SMP) */ 33367351Sjhb 334236456Skib#define ATOMIC_LOAD(TYPE, LOP) \ 33571023Sjhbstatic __inline u_##TYPE \ 33671023Sjhbatomic_load_acq_##TYPE(volatile u_##TYPE *p) \ 33771023Sjhb{ \ 33871023Sjhb u_##TYPE res; \ 33971023Sjhb \ 340165630Sbde __asm __volatile(MPLOCKED LOP \ 341165635Sbde : "=a" (res), /* 0 */ \ 342254612Sjkim "+m" (*p) /* 1 */ \ 343254612Sjkim : : "memory", "cc"); \ 34471023Sjhb \ 34571023Sjhb return (res); \ 34671023Sjhb} \ 347122827Sbdestruct __hack 348100327Smarkm 349165635Sbde#endif /* _KERNEL && !SMP */ 350100327Smarkm 351147855Sjhb#endif /* KLD_MODULE || !__GNUCLIKE_ASM */ 352100251Smarkm 353100251SmarkmATOMIC_ASM(set, char, "orb %b1,%0", "iq", v); 354100251SmarkmATOMIC_ASM(clear, char, "andb %b1,%0", "iq", ~v); 355100251SmarkmATOMIC_ASM(add, char, "addb %b1,%0", "iq", v); 356100251SmarkmATOMIC_ASM(subtract, char, "subb %b1,%0", "iq", v); 35771085Sjhb 358100251SmarkmATOMIC_ASM(set, short, "orw %w1,%0", "ir", v); 359100251SmarkmATOMIC_ASM(clear, short, "andw %w1,%0", "ir", ~v); 360100251SmarkmATOMIC_ASM(add, short, "addw %w1,%0", "ir", v); 361100251SmarkmATOMIC_ASM(subtract, short, "subw %w1,%0", "ir", v); 36271085Sjhb 363100251SmarkmATOMIC_ASM(set, int, "orl %1,%0", "ir", v); 364100251SmarkmATOMIC_ASM(clear, int, "andl %1,%0", "ir", ~v); 365100251SmarkmATOMIC_ASM(add, int, "addl %1,%0", "ir", v); 366100251SmarkmATOMIC_ASM(subtract, int, "subl %1,%0", "ir", v); 36771085Sjhb 368100251SmarkmATOMIC_ASM(set, long, "orl %1,%0", "ir", v); 369100251SmarkmATOMIC_ASM(clear, long, "andl %1,%0", "ir", ~v); 370100251SmarkmATOMIC_ASM(add, long, "addl %1,%0", "ir", v); 371100251SmarkmATOMIC_ASM(subtract, long, "subl %1,%0", "ir", v); 37271085Sjhb 373236456SkibATOMIC_LOAD(char, "cmpxchgb %b0,%1"); 374236456SkibATOMIC_LOAD(short, "cmpxchgw %w0,%1"); 375236456SkibATOMIC_LOAD(int, "cmpxchgl %0,%1"); 376236456SkibATOMIC_LOAD(long, "cmpxchgl %0,%1"); 37771023Sjhb 378236456SkibATOMIC_STORE(char); 379236456SkibATOMIC_STORE(short); 380236456SkibATOMIC_STORE(int); 381236456SkibATOMIC_STORE(long); 382236456Skib 38371085Sjhb#undef ATOMIC_ASM 384236456Skib#undef ATOMIC_LOAD 385236456Skib#undef ATOMIC_STORE 38667351Sjhb 387165635Sbde#ifndef WANT_FUNCTIONS 388147855Sjhb 389220404Sjkim#ifdef _KERNEL 390220404Sjkimextern uint64_t (*atomic_load_acq_64)(volatile uint64_t *); 391220404Sjkimextern void (*atomic_store_rel_64)(volatile uint64_t *, uint64_t); 392220404Sjkim#endif 393220404Sjkim 394147855Sjhbstatic __inline int 395208332Sphkatomic_cmpset_long(volatile u_long *dst, u_long expect, u_long src) 396147855Sjhb{ 397147855Sjhb 398208332Sphk return (atomic_cmpset_int((volatile u_int *)dst, (u_int)expect, 399147855Sjhb (u_int)src)); 400147855Sjhb} 401147855Sjhb 402177276Spjdstatic __inline u_long 403177276Spjdatomic_fetchadd_long(volatile u_long *p, u_long v) 404177276Spjd{ 405177276Spjd 406177276Spjd return (atomic_fetchadd_int((volatile u_int *)p, (u_int)v)); 407177276Spjd} 408177276Spjd 409254617Sjkimstatic __inline int 410254617Sjkimatomic_testandset_long(volatile u_long *p, u_int v) 411254617Sjkim{ 412254617Sjkim 413254617Sjkim return (atomic_testandset_int((volatile u_int *)p, v)); 414254617Sjkim} 415254617Sjkim 416254617Sjkim/* Read the current value and store a new value in the destination. */ 417147855Sjhb#ifdef __GNUCLIKE_ASM 418147855Sjhb 419147855Sjhbstatic __inline u_int 420254617Sjkimatomic_swap_int(volatile u_int *p, u_int v) 421147855Sjhb{ 422147855Sjhb 423165633Sbde __asm __volatile( 424147855Sjhb " xchgl %1,%0 ; " 425254617Sjkim "# atomic_swap_int" 426254617Sjkim : "+r" (v), /* 0 */ 427254612Sjkim "+m" (*p)); /* 1 */ 428147855Sjhb 429254617Sjkim return (v); 430147855Sjhb} 431147855Sjhb 432147855Sjhbstatic __inline u_long 433254617Sjkimatomic_swap_long(volatile u_long *p, u_long v) 434147855Sjhb{ 435147855Sjhb 436254617Sjkim return (atomic_swap_int((volatile u_int *)p, (u_int)v)); 437147855Sjhb} 438147855Sjhb 439147855Sjhb#else /* !__GNUCLIKE_ASM */ 440147855Sjhb 441254617Sjkimu_int atomic_swap_int(volatile u_int *p, u_int v); 442254617Sjkimu_long atomic_swap_long(volatile u_long *p, u_long v); 443147855Sjhb 444147855Sjhb#endif /* __GNUCLIKE_ASM */ 445147855Sjhb 446197803Sattilio#define atomic_set_acq_char atomic_set_barr_char 447197803Sattilio#define atomic_set_rel_char atomic_set_barr_char 448197803Sattilio#define atomic_clear_acq_char atomic_clear_barr_char 449197803Sattilio#define atomic_clear_rel_char atomic_clear_barr_char 450197803Sattilio#define atomic_add_acq_char atomic_add_barr_char 451197803Sattilio#define atomic_add_rel_char atomic_add_barr_char 452197803Sattilio#define atomic_subtract_acq_char atomic_subtract_barr_char 453197803Sattilio#define atomic_subtract_rel_char atomic_subtract_barr_char 45471085Sjhb 455197803Sattilio#define atomic_set_acq_short atomic_set_barr_short 456197803Sattilio#define atomic_set_rel_short atomic_set_barr_short 457197803Sattilio#define atomic_clear_acq_short atomic_clear_barr_short 458197803Sattilio#define atomic_clear_rel_short atomic_clear_barr_short 459197803Sattilio#define atomic_add_acq_short atomic_add_barr_short 460197803Sattilio#define atomic_add_rel_short atomic_add_barr_short 461197803Sattilio#define atomic_subtract_acq_short atomic_subtract_barr_short 462197803Sattilio#define atomic_subtract_rel_short atomic_subtract_barr_short 46371085Sjhb 464197803Sattilio#define atomic_set_acq_int atomic_set_barr_int 465197803Sattilio#define atomic_set_rel_int atomic_set_barr_int 466197803Sattilio#define atomic_clear_acq_int atomic_clear_barr_int 467197803Sattilio#define atomic_clear_rel_int atomic_clear_barr_int 468197803Sattilio#define atomic_add_acq_int atomic_add_barr_int 469197803Sattilio#define atomic_add_rel_int atomic_add_barr_int 470197803Sattilio#define atomic_subtract_acq_int atomic_subtract_barr_int 471197803Sattilio#define atomic_subtract_rel_int atomic_subtract_barr_int 472197910Sattilio#define atomic_cmpset_acq_int atomic_cmpset_int 473197910Sattilio#define atomic_cmpset_rel_int atomic_cmpset_int 47471085Sjhb 475197803Sattilio#define atomic_set_acq_long atomic_set_barr_long 476197803Sattilio#define atomic_set_rel_long atomic_set_barr_long 477197803Sattilio#define atomic_clear_acq_long atomic_clear_barr_long 478197803Sattilio#define atomic_clear_rel_long atomic_clear_barr_long 479197803Sattilio#define atomic_add_acq_long atomic_add_barr_long 480197803Sattilio#define atomic_add_rel_long atomic_add_barr_long 481197803Sattilio#define atomic_subtract_acq_long atomic_subtract_barr_long 482197803Sattilio#define atomic_subtract_rel_long atomic_subtract_barr_long 483197910Sattilio#define atomic_cmpset_acq_long atomic_cmpset_long 484197910Sattilio#define atomic_cmpset_rel_long atomic_cmpset_long 48571085Sjhb 486254617Sjkim#define atomic_readandclear_int(p) atomic_swap_int(p, 0) 487254617Sjkim#define atomic_readandclear_long(p) atomic_swap_long(p, 0) 488254617Sjkim 489147855Sjhb/* Operations on 8-bit bytes. */ 49071085Sjhb#define atomic_set_8 atomic_set_char 49171085Sjhb#define atomic_set_acq_8 atomic_set_acq_char 49271085Sjhb#define atomic_set_rel_8 atomic_set_rel_char 49371085Sjhb#define atomic_clear_8 atomic_clear_char 49471085Sjhb#define atomic_clear_acq_8 atomic_clear_acq_char 49571085Sjhb#define atomic_clear_rel_8 atomic_clear_rel_char 49671085Sjhb#define atomic_add_8 atomic_add_char 49771085Sjhb#define atomic_add_acq_8 atomic_add_acq_char 49871085Sjhb#define atomic_add_rel_8 atomic_add_rel_char 49971085Sjhb#define atomic_subtract_8 atomic_subtract_char 50071085Sjhb#define atomic_subtract_acq_8 atomic_subtract_acq_char 50171085Sjhb#define atomic_subtract_rel_8 atomic_subtract_rel_char 50271085Sjhb#define atomic_load_acq_8 atomic_load_acq_char 50371085Sjhb#define atomic_store_rel_8 atomic_store_rel_char 50471085Sjhb 505147855Sjhb/* Operations on 16-bit words. */ 50671085Sjhb#define atomic_set_16 atomic_set_short 50771085Sjhb#define atomic_set_acq_16 atomic_set_acq_short 50871085Sjhb#define atomic_set_rel_16 atomic_set_rel_short 50971085Sjhb#define atomic_clear_16 atomic_clear_short 51071085Sjhb#define atomic_clear_acq_16 atomic_clear_acq_short 51171085Sjhb#define atomic_clear_rel_16 atomic_clear_rel_short 51271085Sjhb#define atomic_add_16 atomic_add_short 51371085Sjhb#define atomic_add_acq_16 atomic_add_acq_short 51471085Sjhb#define atomic_add_rel_16 atomic_add_rel_short 51571085Sjhb#define atomic_subtract_16 atomic_subtract_short 51671085Sjhb#define atomic_subtract_acq_16 atomic_subtract_acq_short 51771085Sjhb#define atomic_subtract_rel_16 atomic_subtract_rel_short 51871085Sjhb#define atomic_load_acq_16 atomic_load_acq_short 51971085Sjhb#define atomic_store_rel_16 atomic_store_rel_short 52071085Sjhb 521147855Sjhb/* Operations on 32-bit double words. */ 52271085Sjhb#define atomic_set_32 atomic_set_int 52371085Sjhb#define atomic_set_acq_32 atomic_set_acq_int 52471085Sjhb#define atomic_set_rel_32 atomic_set_rel_int 52571085Sjhb#define atomic_clear_32 atomic_clear_int 52671085Sjhb#define atomic_clear_acq_32 atomic_clear_acq_int 52771085Sjhb#define atomic_clear_rel_32 atomic_clear_rel_int 52871085Sjhb#define atomic_add_32 atomic_add_int 52971085Sjhb#define atomic_add_acq_32 atomic_add_acq_int 53071085Sjhb#define atomic_add_rel_32 atomic_add_rel_int 53171085Sjhb#define atomic_subtract_32 atomic_subtract_int 53271085Sjhb#define atomic_subtract_acq_32 atomic_subtract_acq_int 53371085Sjhb#define atomic_subtract_rel_32 atomic_subtract_rel_int 53471085Sjhb#define atomic_load_acq_32 atomic_load_acq_int 53571085Sjhb#define atomic_store_rel_32 atomic_store_rel_int 53671085Sjhb#define atomic_cmpset_32 atomic_cmpset_int 53771085Sjhb#define atomic_cmpset_acq_32 atomic_cmpset_acq_int 53871085Sjhb#define atomic_cmpset_rel_32 atomic_cmpset_rel_int 539254617Sjkim#define atomic_swap_32 atomic_swap_int 54071085Sjhb#define atomic_readandclear_32 atomic_readandclear_int 541150627Sjhb#define atomic_fetchadd_32 atomic_fetchadd_int 542254617Sjkim#define atomic_testandset_32 atomic_testandset_int 54371085Sjhb 544147855Sjhb/* Operations on pointers. */ 545157212Sdes#define atomic_set_ptr(p, v) \ 546157212Sdes atomic_set_int((volatile u_int *)(p), (u_int)(v)) 547157212Sdes#define atomic_set_acq_ptr(p, v) \ 548157212Sdes atomic_set_acq_int((volatile u_int *)(p), (u_int)(v)) 549157212Sdes#define atomic_set_rel_ptr(p, v) \ 550157212Sdes atomic_set_rel_int((volatile u_int *)(p), (u_int)(v)) 551157212Sdes#define atomic_clear_ptr(p, v) \ 552157212Sdes atomic_clear_int((volatile u_int *)(p), (u_int)(v)) 553157212Sdes#define atomic_clear_acq_ptr(p, v) \ 554157212Sdes atomic_clear_acq_int((volatile u_int *)(p), (u_int)(v)) 555157212Sdes#define atomic_clear_rel_ptr(p, v) \ 556157212Sdes atomic_clear_rel_int((volatile u_int *)(p), (u_int)(v)) 557157212Sdes#define atomic_add_ptr(p, v) \ 558157212Sdes atomic_add_int((volatile u_int *)(p), (u_int)(v)) 559157212Sdes#define atomic_add_acq_ptr(p, v) \ 560157212Sdes atomic_add_acq_int((volatile u_int *)(p), (u_int)(v)) 561157212Sdes#define atomic_add_rel_ptr(p, v) \ 562157212Sdes atomic_add_rel_int((volatile u_int *)(p), (u_int)(v)) 563157212Sdes#define atomic_subtract_ptr(p, v) \ 564157212Sdes atomic_subtract_int((volatile u_int *)(p), (u_int)(v)) 565157212Sdes#define atomic_subtract_acq_ptr(p, v) \ 566157212Sdes atomic_subtract_acq_int((volatile u_int *)(p), (u_int)(v)) 567157212Sdes#define atomic_subtract_rel_ptr(p, v) \ 568157212Sdes atomic_subtract_rel_int((volatile u_int *)(p), (u_int)(v)) 569157212Sdes#define atomic_load_acq_ptr(p) \ 570157212Sdes atomic_load_acq_int((volatile u_int *)(p)) 571157212Sdes#define atomic_store_rel_ptr(p, v) \ 572157212Sdes atomic_store_rel_int((volatile u_int *)(p), (v)) 573157212Sdes#define atomic_cmpset_ptr(dst, old, new) \ 574157212Sdes atomic_cmpset_int((volatile u_int *)(dst), (u_int)(old), (u_int)(new)) 575157212Sdes#define atomic_cmpset_acq_ptr(dst, old, new) \ 576165633Sbde atomic_cmpset_acq_int((volatile u_int *)(dst), (u_int)(old), \ 577165633Sbde (u_int)(new)) 578157212Sdes#define atomic_cmpset_rel_ptr(dst, old, new) \ 579165633Sbde atomic_cmpset_rel_int((volatile u_int *)(dst), (u_int)(old), \ 580165633Sbde (u_int)(new)) 581254617Sjkim#define atomic_swap_ptr(p, v) \ 582254617Sjkim atomic_swap_int((volatile u_int *)(p), (u_int)(v)) 583157212Sdes#define atomic_readandclear_ptr(p) \ 584157212Sdes atomic_readandclear_int((volatile u_int *)(p)) 58565514Sphk 586165635Sbde#endif /* !WANT_FUNCTIONS */ 587165633Sbde 588165633Sbde#endif /* !_MACHINE_ATOMIC_H_ */ 589