/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 1998 Doug Rabson * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: src/sys/alpha/include/atomic.h,v 1.21.2.3 2005/10/06 18:12:05 jhb */ #ifndef _MACHINE_ATOMIC_H_ #define _MACHINE_ATOMIC_H_ #ifndef _SYS_CDEFS_H_ #error this file needs sys/cdefs.h as a prerequisite #endif #include #if !defined(__mips_n64) && !defined(__mips_n32) #include #endif /* * Note: All the 64-bit atomic operations are only atomic when running * in 64-bit mode. It is assumed that code compiled for n32 and n64 * fits into this definition and no further safeties are needed. * * It is also assumed that the add, subtract and other arithmetic is * done on numbers not pointers. The special rules for n32 pointers * do not have atomic operations defined for them, but generally shouldn't * need atomic operations. */ #ifndef __MIPS_PLATFORM_SYNC_NOPS #define __MIPS_PLATFORM_SYNC_NOPS "" #endif static __inline void mips_sync(void) { __asm __volatile (".set noreorder\n" "\tsync\n" __MIPS_PLATFORM_SYNC_NOPS ".set reorder\n" : : : "memory"); } #define mb() mips_sync() #define wmb() mips_sync() #define rmb() mips_sync() /* * Various simple arithmetic on memory which is atomic in the presence * of interrupts and SMP safe. */ void atomic_set_8(__volatile uint8_t *, uint8_t); void atomic_clear_8(__volatile uint8_t *, uint8_t); void atomic_add_8(__volatile uint8_t *, uint8_t); void atomic_subtract_8(__volatile uint8_t *, uint8_t); void atomic_set_16(__volatile uint16_t *, uint16_t); void atomic_clear_16(__volatile uint16_t *, uint16_t); void atomic_add_16(__volatile uint16_t *, uint16_t); void atomic_subtract_16(__volatile uint16_t *, uint16_t); static __inline int atomic_cmpset_8(__volatile uint8_t *, uint8_t, uint8_t); static __inline int atomic_fcmpset_8(__volatile uint8_t *, uint8_t *, uint8_t); static __inline int atomic_cmpset_16(__volatile uint16_t *, uint16_t, uint16_t); static __inline int atomic_fcmpset_16(__volatile uint16_t *, uint16_t *, uint16_t); static __inline void atomic_set_32(__volatile uint32_t *p, uint32_t v) { uint32_t temp; __asm __volatile ( "1:\tll %0, %3\n\t" /* load old value */ "or %0, %2, %0\n\t" /* calculate new value */ "sc %0, %1\n\t" /* attempt to store */ "beqz %0, 1b\n\t" /* spin if failed */ : "=&r" (temp), "=m" (*p) : "r" (v), "m" (*p) : "memory"); } static __inline void atomic_clear_32(__volatile uint32_t *p, uint32_t v) { uint32_t temp; v = ~v; __asm __volatile ( "1:\tll %0, %3\n\t" /* load old value */ "and %0, %2, %0\n\t" /* calculate new value */ "sc %0, %1\n\t" /* attempt to store */ "beqz %0, 1b\n\t" /* spin if failed */ : "=&r" (temp), "=m" (*p) : "r" (v), "m" (*p) : "memory"); } static __inline void atomic_add_32(__volatile uint32_t *p, uint32_t v) { uint32_t temp; __asm __volatile ( "1:\tll %0, %3\n\t" /* load old value */ "addu %0, %2, %0\n\t" /* calculate new value */ "sc %0, %1\n\t" /* attempt to store */ "beqz %0, 1b\n\t" /* spin if failed */ : "=&r" (temp), "=m" (*p) : "r" (v), "m" (*p) : "memory"); } static __inline void atomic_subtract_32(__volatile uint32_t *p, uint32_t v) { uint32_t temp; __asm __volatile ( "1:\tll %0, %3\n\t" /* load old value */ "subu %0, %2\n\t" /* calculate new value */ "sc %0, %1\n\t" /* attempt to store */ "beqz %0, 1b\n\t" /* spin if failed */ : "=&r" (temp), "=m" (*p) : "r" (v), "m" (*p) : "memory"); } static __inline uint32_t atomic_readandclear_32(__volatile uint32_t *addr) { uint32_t result,temp; __asm __volatile ( "1:\tll %0,%3\n\t" /* load current value, asserting lock */ "li %1,0\n\t" /* value to store */ "sc %1,%2\n\t" /* attempt to store */ "beqz %1, 1b\n\t" /* if the store failed, spin */ : "=&r"(result), "=&r"(temp), "=m" (*addr) : "m" (*addr) : "memory"); return result; } static __inline uint32_t atomic_readandset_32(__volatile uint32_t *addr, uint32_t value) { uint32_t result,temp; __asm __volatile ( "1:\tll %0,%3\n\t" /* load current value, asserting lock */ "or %1,$0,%4\n\t" "sc %1,%2\n\t" /* attempt to store */ "beqz %1, 1b\n\t" /* if the store failed, spin */ : "=&r"(result), "=&r"(temp), "=m" (*addr) : "m" (*addr), "r" (value) : "memory"); return result; } #if defined(__mips_n64) || defined(__mips_n32) static __inline void atomic_set_64(__volatile uint64_t *p, uint64_t v) { uint64_t temp; __asm __volatile ( "1:\n\t" "lld %0, %3\n\t" /* load old value */ "or %0, %2, %0\n\t" /* calculate new value */ "scd %0, %1\n\t" /* attempt to store */ "beqz %0, 1b\n\t" /* spin if failed */ : "=&r" (temp), "=m" (*p) : "r" (v), "m" (*p) : "memory"); } static __inline void atomic_clear_64(__volatile uint64_t *p, uint64_t v) { uint64_t temp; v = ~v; __asm __volatile ( "1:\n\t" "lld %0, %3\n\t" /* load old value */ "and %0, %2, %0\n\t" /* calculate new value */ "scd %0, %1\n\t" /* attempt to store */ "beqz %0, 1b\n\t" /* spin if failed */ : "=&r" (temp), "=m" (*p) : "r" (v), "m" (*p) : "memory"); } static __inline void atomic_add_64(__volatile uint64_t *p, uint64_t v) { uint64_t temp; __asm __volatile ( "1:\n\t" "lld %0, %3\n\t" /* load old value */ "daddu %0, %2, %0\n\t" /* calculate new value */ "scd %0, %1\n\t" /* attempt to store */ "beqz %0, 1b\n\t" /* spin if failed */ : "=&r" (temp), "=m" (*p) : "r" (v), "m" (*p) : "memory"); } static __inline void atomic_subtract_64(__volatile uint64_t *p, uint64_t v) { uint64_t temp; __asm __volatile ( "1:\n\t" "lld %0, %3\n\t" /* load old value */ "dsubu %0, %2\n\t" /* calculate new value */ "scd %0, %1\n\t" /* attempt to store */ "beqz %0, 1b\n\t" /* spin if failed */ : "=&r" (temp), "=m" (*p) : "r" (v), "m" (*p) : "memory"); } static __inline uint64_t atomic_readandclear_64(__volatile uint64_t *addr) { uint64_t result,temp; __asm __volatile ( "1:\n\t" "lld %0, %3\n\t" /* load old value */ "li %1, 0\n\t" /* value to store */ "scd %1, %2\n\t" /* attempt to store */ "beqz %1, 1b\n\t" /* if the store failed, spin */ : "=&r"(result), "=&r"(temp), "=m" (*addr) : "m" (*addr) : "memory"); return result; } static __inline uint64_t atomic_readandset_64(__volatile uint64_t *addr, uint64_t value) { uint64_t result,temp; __asm __volatile ( "1:\n\t" "lld %0,%3\n\t" /* Load old value*/ "or %1,$0,%4\n\t" "scd %1,%2\n\t" /* attempt to store */ "beqz %1, 1b\n\t" /* if the store failed, spin */ : "=&r"(result), "=&r"(temp), "=m" (*addr) : "m" (*addr), "r" (value) : "memory"); return result; } #endif #define ATOMIC_ACQ_REL(NAME, WIDTH) \ static __inline void \ atomic_##NAME##_acq_##WIDTH(__volatile uint##WIDTH##_t *p, uint##WIDTH##_t v)\ { \ atomic_##NAME##_##WIDTH(p, v); \ mips_sync(); \ } \ \ static __inline void \ atomic_##NAME##_rel_##WIDTH(__volatile uint##WIDTH##_t *p, uint##WIDTH##_t v)\ { \ mips_sync(); \ atomic_##NAME##_##WIDTH(p, v); \ } /* Variants of simple arithmetic with memory barriers. */ ATOMIC_ACQ_REL(set, 8) ATOMIC_ACQ_REL(clear, 8) ATOMIC_ACQ_REL(add, 8) ATOMIC_ACQ_REL(subtract, 8) ATOMIC_ACQ_REL(set, 16) ATOMIC_ACQ_REL(clear, 16) ATOMIC_ACQ_REL(add, 16) ATOMIC_ACQ_REL(subtract, 16) ATOMIC_ACQ_REL(set, 32) ATOMIC_ACQ_REL(clear, 32) ATOMIC_ACQ_REL(add, 32) ATOMIC_ACQ_REL(subtract, 32) #if defined(__mips_n64) || defined(__mips_n32) ATOMIC_ACQ_REL(set, 64) ATOMIC_ACQ_REL(clear, 64) ATOMIC_ACQ_REL(add, 64) ATOMIC_ACQ_REL(subtract, 64) #endif #undef ATOMIC_ACQ_REL /* * We assume that a = b will do atomic loads and stores. */ #define ATOMIC_STORE_LOAD(WIDTH) \ static __inline uint##WIDTH##_t \ atomic_load_acq_##WIDTH(__volatile uint##WIDTH##_t *p) \ { \ uint##WIDTH##_t v; \ \ v = *p; \ mips_sync(); \ return (v); \ } \ \ static __inline void \ atomic_store_rel_##WIDTH(__volatile uint##WIDTH##_t *p, uint##WIDTH##_t v)\ { \ mips_sync(); \ *p = v; \ } ATOMIC_STORE_LOAD(32) #if defined(__mips_n64) || defined(__mips_n32) ATOMIC_STORE_LOAD(64) #endif #undef ATOMIC_STORE_LOAD /* * MIPS n32 is not a LP64 API, so atomic_load_64 isn't defined there. Define it * here since n32 is an oddball !LP64 but that can do 64-bit atomics. */ #if defined(__mips_n32) #define atomic_load_64 atomic_load_acq_64 #endif /* * Atomically compare the value stored at *p with cmpval and if the * two values are equal, update the value of *p with newval. Returns * zero if the compare failed, nonzero otherwise. */ static __inline int atomic_cmpset_32(__volatile uint32_t *p, uint32_t cmpval, uint32_t newval) { int ret; __asm __volatile ( "1:\tll %0, %4\n\t" /* load old value */ "bne %0, %2, 2f\n\t" /* compare */ "move %0, %3\n\t" /* value to store */ "sc %0, %1\n\t" /* attempt to store */ "beqz %0, 1b\n\t" /* if it failed, spin */ "j 3f\n\t" "2:\n\t" "li %0, 0\n\t" "3:\n" : "=&r" (ret), "=m" (*p) : "r" (cmpval), "r" (newval), "m" (*p) : "memory"); return ret; } /* * Atomically compare the value stored at *p with cmpval and if the * two values are equal, update the value of *p with newval. Returns * zero if the compare failed, nonzero otherwise. */ static __inline int atomic_fcmpset_32(__volatile uint32_t *p, uint32_t *cmpval, uint32_t newval) { int ret; /* * The following sequence (similar to that in atomic_fcmpset_64) will * attempt to update the value of *p with newval if the comparison * succeeds. Note that they'll exit regardless of whether the store * actually succeeded, leaving *cmpval untouched. This is in line with * the documentation of atomic_fcmpset_() in atomic(9) for ll/sc * architectures. */ __asm __volatile ( "ll %0, %1\n\t" /* load old value */ "bne %0, %4, 1f\n\t" /* compare */ "move %0, %3\n\t" /* value to store */ "sc %0, %1\n\t" /* attempt to store */ "j 2f\n\t" /* exit regardless of success */ "nop\n\t" /* avoid delay slot accident */ "1:\n\t" "sw %0, %2\n\t" /* save old value */ "li %0, 0\n\t" "2:\n" : "=&r" (ret), "+m" (*p), "=m" (*cmpval) : "r" (newval), "r" (*cmpval) : "memory"); return ret; } #define ATOMIC_CMPSET_ACQ_REL(WIDTH) \ static __inline int \ atomic_cmpset_acq_##WIDTH(__volatile uint##WIDTH##_t *p, \ uint##WIDTH##_t cmpval, uint##WIDTH##_t newval) \ { \ int retval; \ \ retval = atomic_cmpset_##WIDTH(p, cmpval, newval); \ mips_sync(); \ return (retval); \ } \ \ static __inline int \ atomic_cmpset_rel_##WIDTH(__volatile uint##WIDTH##_t *p, \ uint##WIDTH##_t cmpval, uint##WIDTH##_t newval) \ { \ mips_sync(); \ return (atomic_cmpset_##WIDTH(p, cmpval, newval)); \ } #define ATOMIC_FCMPSET_ACQ_REL(WIDTH) \ static __inline int \ atomic_fcmpset_acq_##WIDTH(__volatile uint##WIDTH##_t *p, \ uint##WIDTH##_t *cmpval, uint##WIDTH##_t newval) \ { \ int retval; \ \ retval = atomic_fcmpset_##WIDTH(p, cmpval, newval); \ mips_sync(); \ return (retval); \ } \ \ static __inline int \ atomic_fcmpset_rel_##WIDTH(__volatile uint##WIDTH##_t *p, \ uint##WIDTH##_t *cmpval, uint##WIDTH##_t newval) \ { \ mips_sync(); \ return (atomic_fcmpset_##WIDTH(p, cmpval, newval)); \ } /* * Atomically compare the value stored at *p with cmpval and if the * two values are equal, update the value of *p with newval. Returns * zero if the compare failed, nonzero otherwise. */ ATOMIC_CMPSET_ACQ_REL(8); ATOMIC_CMPSET_ACQ_REL(16); ATOMIC_CMPSET_ACQ_REL(32); ATOMIC_FCMPSET_ACQ_REL(8); ATOMIC_FCMPSET_ACQ_REL(16); ATOMIC_FCMPSET_ACQ_REL(32); /* * Atomically add the value of v to the integer pointed to by p and return * the previous value of *p. */ static __inline uint32_t atomic_fetchadd_32(__volatile uint32_t *p, uint32_t v) { uint32_t value, temp; __asm __volatile ( "1:\tll %0, %1\n\t" /* load old value */ "addu %2, %3, %0\n\t" /* calculate new value */ "sc %2, %1\n\t" /* attempt to store */ "beqz %2, 1b\n\t" /* spin if failed */ : "=&r" (value), "=m" (*p), "=&r" (temp) : "r" (v), "m" (*p)); return (value); } #if defined(__mips_n64) || defined(__mips_n32) /* * Atomically compare the value stored at *p with cmpval and if the * two values are equal, update the value of *p with newval. Returns * zero if the compare failed, nonzero otherwise. */ static __inline int atomic_cmpset_64(__volatile uint64_t *p, uint64_t cmpval, uint64_t newval) { int ret; __asm __volatile ( "1:\n\t" "lld %0, %4\n\t" /* load old value */ "bne %0, %2, 2f\n\t" /* compare */ "move %0, %3\n\t" /* value to store */ "scd %0, %1\n\t" /* attempt to store */ "beqz %0, 1b\n\t" /* if it failed, spin */ "j 3f\n\t" "2:\n\t" "li %0, 0\n\t" "3:\n" : "=&r" (ret), "=m" (*p) : "r" (cmpval), "r" (newval), "m" (*p) : "memory"); return ret; } static __inline int atomic_fcmpset_64(__volatile uint64_t *p, uint64_t *cmpval, uint64_t newval) { int ret; __asm __volatile ( "lld %0, %1\n\t" /* load old value */ "bne %0, %4, 1f\n\t" /* compare */ "move %0, %3\n\t" /* value to store */ "scd %0, %1\n\t" /* attempt to store */ "j 2f\n\t" /* exit regardless of success */ "nop\n\t" /* avoid delay slot accident */ "1:\n\t" "sd %0, %2\n\t" /* save old value */ "li %0, 0\n\t" "2:\n" : "=&r" (ret), "+m" (*p), "=m" (*cmpval) : "r" (newval), "r" (*cmpval) : "memory"); return ret; } /* * Atomically compare the value stored at *p with cmpval and if the * two values are equal, update the value of *p with newval. Returns * zero if the compare failed, nonzero otherwise. */ ATOMIC_CMPSET_ACQ_REL(64); ATOMIC_FCMPSET_ACQ_REL(64); /* * Atomically add the value of v to the integer pointed to by p and return * the previous value of *p. */ static __inline uint64_t atomic_fetchadd_64(__volatile uint64_t *p, uint64_t v) { uint64_t value, temp; __asm __volatile ( "1:\n\t" "lld %0, %1\n\t" /* load old value */ "daddu %2, %3, %0\n\t" /* calculate new value */ "scd %2, %1\n\t" /* attempt to store */ "beqz %2, 1b\n\t" /* spin if failed */ : "=&r" (value), "=m" (*p), "=&r" (temp) : "r" (v), "m" (*p)); return (value); } #endif static __inline void atomic_thread_fence_acq(void) { mips_sync(); } static __inline void atomic_thread_fence_rel(void) { mips_sync(); } static __inline void atomic_thread_fence_acq_rel(void) { mips_sync(); } static __inline void atomic_thread_fence_seq_cst(void) { mips_sync(); } /* Operations on chars. */ #define atomic_set_char atomic_set_8 #define atomic_set_acq_char atomic_set_acq_8 #define atomic_set_rel_char atomic_set_rel_8 #define atomic_clear_char atomic_clear_8 #define atomic_clear_acq_char atomic_clear_acq_8 #define atomic_clear_rel_char atomic_clear_rel_8 #define atomic_add_char atomic_add_8 #define atomic_add_acq_char atomic_add_acq_8 #define atomic_add_rel_char atomic_add_rel_8 #define atomic_subtract_char atomic_subtract_8 #define atomic_subtract_acq_char atomic_subtract_acq_8 #define atomic_subtract_rel_char atomic_subtract_rel_8 #define atomic_cmpset_char atomic_cmpset_8 #define atomic_cmpset_acq_char atomic_cmpset_acq_8 #define atomic_cmpset_rel_char atomic_cmpset_rel_8 #define atomic_fcmpset_char atomic_fcmpset_8 #define atomic_fcmpset_acq_char atomic_fcmpset_acq_8 #define atomic_fcmpset_rel_char atomic_fcmpset_rel_8 /* Operations on shorts. */ #define atomic_set_short atomic_set_16 #define atomic_set_acq_short atomic_set_acq_16 #define atomic_set_rel_short atomic_set_rel_16 #define atomic_clear_short atomic_clear_16 #define atomic_clear_acq_short atomic_clear_acq_16 #define atomic_clear_rel_short atomic_clear_rel_16 #define atomic_add_short atomic_add_16 #define atomic_add_acq_short atomic_add_acq_16 #define atomic_add_rel_short atomic_add_rel_16 #define atomic_subtract_short atomic_subtract_16 #define atomic_subtract_acq_short atomic_subtract_acq_16 #define atomic_subtract_rel_short atomic_subtract_rel_16 #define atomic_cmpset_short atomic_cmpset_16 #define atomic_cmpset_acq_short atomic_cmpset_acq_16 #define atomic_cmpset_rel_short atomic_cmpset_rel_16 #define atomic_fcmpset_short atomic_fcmpset_16 #define atomic_fcmpset_acq_short atomic_fcmpset_acq_16 #define atomic_fcmpset_rel_short atomic_fcmpset_rel_16 /* Operations on ints. */ #define atomic_set_int atomic_set_32 #define atomic_set_acq_int atomic_set_acq_32 #define atomic_set_rel_int atomic_set_rel_32 #define atomic_clear_int atomic_clear_32 #define atomic_clear_acq_int atomic_clear_acq_32 #define atomic_clear_rel_int atomic_clear_rel_32 #define atomic_add_int atomic_add_32 #define atomic_add_acq_int atomic_add_acq_32 #define atomic_add_rel_int atomic_add_rel_32 #define atomic_subtract_int atomic_subtract_32 #define atomic_subtract_acq_int atomic_subtract_acq_32 #define atomic_subtract_rel_int atomic_subtract_rel_32 #define atomic_cmpset_int atomic_cmpset_32 #define atomic_cmpset_acq_int atomic_cmpset_acq_32 #define atomic_cmpset_rel_int atomic_cmpset_rel_32 #define atomic_fcmpset_int atomic_fcmpset_32 #define atomic_fcmpset_acq_int atomic_fcmpset_acq_32 #define atomic_fcmpset_rel_int atomic_fcmpset_rel_32 #define atomic_load_acq_int atomic_load_acq_32 #define atomic_store_rel_int atomic_store_rel_32 #define atomic_readandclear_int atomic_readandclear_32 #define atomic_readandset_int atomic_readandset_32 #define atomic_fetchadd_int atomic_fetchadd_32 /* * I think the following is right, even for n32. For n32 the pointers * are still 32-bits, so we need to operate on them as 32-bit quantities, * even though they are sign extended in operation. For longs, there's * no question because they are always 32-bits. */ #ifdef __mips_n64 /* Operations on longs. */ #define atomic_set_long atomic_set_64 #define atomic_set_acq_long atomic_set_acq_64 #define atomic_set_rel_long atomic_set_rel_64 #define atomic_clear_long atomic_clear_64 #define atomic_clear_acq_long atomic_clear_acq_64 #define atomic_clear_rel_long atomic_clear_rel_64 #define atomic_add_long atomic_add_64 #define atomic_add_acq_long atomic_add_acq_64 #define atomic_add_rel_long atomic_add_rel_64 #define atomic_subtract_long atomic_subtract_64 #define atomic_subtract_acq_long atomic_subtract_acq_64 #define atomic_subtract_rel_long atomic_subtract_rel_64 #define atomic_cmpset_long atomic_cmpset_64 #define atomic_cmpset_acq_long atomic_cmpset_acq_64 #define atomic_cmpset_rel_long atomic_cmpset_rel_64 #define atomic_fcmpset_long atomic_fcmpset_64 #define atomic_fcmpset_acq_long atomic_fcmpset_acq_64 #define atomic_fcmpset_rel_long atomic_fcmpset_rel_64 #define atomic_load_acq_long atomic_load_acq_64 #define atomic_store_rel_long atomic_store_rel_64 #define atomic_fetchadd_long atomic_fetchadd_64 #define atomic_readandclear_long atomic_readandclear_64 #else /* !__mips_n64 */ /* Operations on longs. */ #define atomic_set_long(p, v) \ atomic_set_32((volatile u_int *)(p), (u_int)(v)) #define atomic_set_acq_long(p, v) \ atomic_set_acq_32((volatile u_int *)(p), (u_int)(v)) #define atomic_set_rel_long(p, v) \ atomic_set_rel_32((volatile u_int *)(p), (u_int)(v)) #define atomic_clear_long(p, v) \ atomic_clear_32((volatile u_int *)(p), (u_int)(v)) #define atomic_clear_acq_long(p, v) \ atomic_clear_acq_32((volatile u_int *)(p), (u_int)(v)) #define atomic_clear_rel_long(p, v) \ atomic_clear_rel_32((volatile u_int *)(p), (u_int)(v)) #define atomic_add_long(p, v) \ atomic_add_32((volatile u_int *)(p), (u_int)(v)) #define atomic_add_acq_long(p, v) \ atomic_add_32((volatile u_int *)(p), (u_int)(v)) #define atomic_add_rel_long(p, v) \ atomic_add_32((volatile u_int *)(p), (u_int)(v)) #define atomic_subtract_long(p, v) \ atomic_subtract_32((volatile u_int *)(p), (u_int)(v)) #define atomic_subtract_acq_long(p, v) \ atomic_subtract_acq_32((volatile u_int *)(p), (u_int)(v)) #define atomic_subtract_rel_long(p, v) \ atomic_subtract_rel_32((volatile u_int *)(p), (u_int)(v)) #define atomic_cmpset_long(p, cmpval, newval) \ atomic_cmpset_32((volatile u_int *)(p), (u_int)(cmpval), \ (u_int)(newval)) #define atomic_cmpset_acq_long(p, cmpval, newval) \ atomic_cmpset_acq_32((volatile u_int *)(p), (u_int)(cmpval), \ (u_int)(newval)) #define atomic_cmpset_rel_long(p, cmpval, newval) \ atomic_cmpset_rel_32((volatile u_int *)(p), (u_int)(cmpval), \ (u_int)(newval)) #define atomic_fcmpset_long(p, cmpval, newval) \ atomic_fcmpset_32((volatile u_int *)(p), (u_int *)(cmpval), \ (u_int)(newval)) #define atomic_fcmpset_acq_long(p, cmpval, newval) \ atomic_fcmpset_acq_32((volatile u_int *)(p), (u_int *)(cmpval), \ (u_int)(newval)) #define atomic_fcmpset_rel_long(p, cmpval, newval) \ atomic_fcmpset_rel_32((volatile u_int *)(p), (u_int *)(cmpval), \ (u_int)(newval)) #define atomic_load_acq_long(p) \ (u_long)atomic_load_acq_32((volatile u_int *)(p)) #define atomic_store_rel_long(p, v) \ atomic_store_rel_32((volatile u_int *)(p), (u_int)(v)) #define atomic_fetchadd_long(p, v) \ atomic_fetchadd_32((volatile u_int *)(p), (u_int)(v)) #define atomic_readandclear_long(p) \ atomic_readandclear_32((volatile u_int *)(p)) #endif /* __mips_n64 */ /* Operations on pointers. */ #define atomic_set_ptr atomic_set_long #define atomic_set_acq_ptr atomic_set_acq_long #define atomic_set_rel_ptr atomic_set_rel_long #define atomic_clear_ptr atomic_clear_long #define atomic_clear_acq_ptr atomic_clear_acq_long #define atomic_clear_rel_ptr atomic_clear_rel_long #define atomic_add_ptr atomic_add_long #define atomic_add_acq_ptr atomic_add_acq_long #define atomic_add_rel_ptr atomic_add_rel_long #define atomic_subtract_ptr atomic_subtract_long #define atomic_subtract_acq_ptr atomic_subtract_acq_long #define atomic_subtract_rel_ptr atomic_subtract_rel_long #define atomic_cmpset_ptr atomic_cmpset_long #define atomic_cmpset_acq_ptr atomic_cmpset_acq_long #define atomic_cmpset_rel_ptr atomic_cmpset_rel_long #define atomic_fcmpset_ptr atomic_fcmpset_long #define atomic_fcmpset_acq_ptr atomic_fcmpset_acq_long #define atomic_fcmpset_rel_ptr atomic_fcmpset_rel_long #define atomic_load_acq_ptr atomic_load_acq_long #define atomic_store_rel_ptr atomic_store_rel_long #define atomic_readandclear_ptr atomic_readandclear_long static __inline unsigned int atomic_swap_int(volatile unsigned int *ptr, const unsigned int value) { unsigned int retval; retval = *ptr; while (!atomic_fcmpset_int(ptr, &retval, value)) ; return (retval); } static __inline uint32_t atomic_swap_32(volatile uint32_t *ptr, const uint32_t value) { uint32_t retval; retval = *ptr; while (!atomic_fcmpset_32(ptr, &retval, value)) ; return (retval); } #if defined(__mips_n64) || defined(__mips_n32) static __inline uint64_t atomic_swap_64(volatile uint64_t *ptr, const uint64_t value) { uint64_t retval; retval = *ptr; while (!atomic_fcmpset_64(ptr, &retval, value)) ; return (retval); } #endif #ifdef __mips_n64 static __inline unsigned long atomic_swap_long(volatile unsigned long *ptr, const unsigned long value) { unsigned long retval; retval = *ptr; while (!atomic_fcmpset_64((volatile uint64_t *)ptr, (uint64_t *)&retval, value)) ; return (retval); } #else static __inline unsigned long atomic_swap_long(volatile unsigned long *ptr, const unsigned long value) { unsigned long retval; retval = *ptr; while (!atomic_fcmpset_32((volatile uint32_t *)ptr, (uint32_t *)&retval, value)) ; return (retval); } #endif #define atomic_swap_ptr(ptr, value) atomic_swap_long((unsigned long *)(ptr), value) #include #endif /* ! _MACHINE_ATOMIC_H_ */