21ead51d79
in place. To do per-cpu stats, convert all fields that previously were
maintained in the vmmeters that sit in pcpus to counter(9).
- Since some vmmeter stats may be touched at very early stages of boot,
before we have set up UMA and we can do counter_u64_alloc(), provide an
early counter mechanism:
o Leave one spare uint64_t in struct pcpu, named pc_early_dummy_counter.
o Point counter(9) fields of vmmeter to pcpu[0].pc_early_dummy_counter,
so that at early stages of boot, before counters are allocated we already
point to a counter that can be safely written to.
o For sparc64 that required a whole dummy pcpu[MAXCPU] array.
Further related changes:
- Don't include vmmeter.h into pcpu.h.
- vm.stats.vm.v_swappgsout and vm.stats.vm.v_swappgsin changed to 64-bit,
to match kernel representation.
- struct vmmeter hidden under _KERNEL, and only vmstat(1) is an exclusion.
This is based on benno@'s 4-year old patch:
https://lists.freebsd.org/pipermail/freebsd-arch/2013-July/014471.html
Reviewed by: kib, gallatin, marius, lidl
Differential Revision: https://reviews.freebsd.org/D10156
855 lines
25 KiB
C
855 lines
25 KiB
C
/*-
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* Copyright (c) 1998 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_ATOMIC_H_
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#define _MACHINE_ATOMIC_H_
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#ifndef _SYS_CDEFS_H_
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#error this file needs sys/cdefs.h as a prerequisite
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#endif
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#ifdef _KERNEL
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#include <machine/md_var.h>
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#include <machine/specialreg.h>
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#endif
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#ifndef __OFFSETOF_MONITORBUF
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/*
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* __OFFSETOF_MONITORBUF == __pcpu_offset(pc_monitorbuf).
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*
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* The open-coded number is used instead of the symbolic expression to
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* avoid a dependency on sys/pcpu.h in machine/atomic.h consumers.
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* An assertion in i386/vm_machdep.c ensures that the value is correct.
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*/
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#define __OFFSETOF_MONITORBUF 0x80
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static __inline void
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__mbk(void)
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{
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__asm __volatile("lock; addl $0,%%fs:%0"
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: "+m" (*(u_int *)__OFFSETOF_MONITORBUF) : : "memory", "cc");
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}
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static __inline void
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__mbu(void)
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{
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__asm __volatile("lock; addl $0,(%%esp)" : : : "memory", "cc");
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}
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#endif
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/*
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* Various simple operations on memory, each of which is atomic in the
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* presence of interrupts and multiple processors.
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*
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* atomic_set_char(P, V) (*(u_char *)(P) |= (V))
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* atomic_clear_char(P, V) (*(u_char *)(P) &= ~(V))
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* atomic_add_char(P, V) (*(u_char *)(P) += (V))
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* atomic_subtract_char(P, V) (*(u_char *)(P) -= (V))
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*
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* atomic_set_short(P, V) (*(u_short *)(P) |= (V))
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* atomic_clear_short(P, V) (*(u_short *)(P) &= ~(V))
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* atomic_add_short(P, V) (*(u_short *)(P) += (V))
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* atomic_subtract_short(P, V) (*(u_short *)(P) -= (V))
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*
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* atomic_set_int(P, V) (*(u_int *)(P) |= (V))
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* atomic_clear_int(P, V) (*(u_int *)(P) &= ~(V))
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* atomic_add_int(P, V) (*(u_int *)(P) += (V))
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* atomic_subtract_int(P, V) (*(u_int *)(P) -= (V))
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* atomic_swap_int(P, V) (return (*(u_int *)(P)); *(u_int *)(P) = (V);)
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* atomic_readandclear_int(P) (return (*(u_int *)(P)); *(u_int *)(P) = 0;)
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*
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* atomic_set_long(P, V) (*(u_long *)(P) |= (V))
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* atomic_clear_long(P, V) (*(u_long *)(P) &= ~(V))
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* atomic_add_long(P, V) (*(u_long *)(P) += (V))
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* atomic_subtract_long(P, V) (*(u_long *)(P) -= (V))
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* atomic_swap_long(P, V) (return (*(u_long *)(P)); *(u_long *)(P) = (V);)
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* atomic_readandclear_long(P) (return (*(u_long *)(P)); *(u_long *)(P) = 0;)
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*/
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/*
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* The above functions are expanded inline in the statically-linked
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* kernel. Lock prefixes are generated if an SMP kernel is being
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* built.
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*
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* Kernel modules call real functions which are built into the kernel.
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* This allows kernel modules to be portable between UP and SMP systems.
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*/
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#if defined(KLD_MODULE) || !defined(__GNUCLIKE_ASM)
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#define ATOMIC_ASM(NAME, TYPE, OP, CONS, V) \
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void atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v); \
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void atomic_##NAME##_barr_##TYPE(volatile u_##TYPE *p, u_##TYPE v)
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int atomic_cmpset_char(volatile u_char *dst, u_char expect, u_char src);
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int atomic_cmpset_short(volatile u_short *dst, u_short expect, u_short src);
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int atomic_cmpset_int(volatile u_int *dst, u_int expect, u_int src);
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int atomic_fcmpset_char(volatile u_char *dst, u_char *expect, u_char src);
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int atomic_fcmpset_short(volatile u_short *dst, u_short *expect,
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u_short src);
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int atomic_fcmpset_int(volatile u_int *dst, u_int *expect, u_int src);
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u_int atomic_fetchadd_int(volatile u_int *p, u_int v);
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int atomic_testandset_int(volatile u_int *p, u_int v);
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int atomic_testandclear_int(volatile u_int *p, u_int v);
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void atomic_thread_fence_acq(void);
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void atomic_thread_fence_acq_rel(void);
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void atomic_thread_fence_rel(void);
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void atomic_thread_fence_seq_cst(void);
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#define ATOMIC_LOAD(TYPE) \
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u_##TYPE atomic_load_acq_##TYPE(volatile u_##TYPE *p)
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#define ATOMIC_STORE(TYPE) \
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void atomic_store_rel_##TYPE(volatile u_##TYPE *p, u_##TYPE v)
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int atomic_cmpset_64(volatile uint64_t *, uint64_t, uint64_t);
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uint64_t atomic_load_acq_64(volatile uint64_t *);
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void atomic_store_rel_64(volatile uint64_t *, uint64_t);
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uint64_t atomic_swap_64(volatile uint64_t *, uint64_t);
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#else /* !KLD_MODULE && __GNUCLIKE_ASM */
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/*
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* For userland, always use lock prefixes so that the binaries will run
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* on both SMP and !SMP systems.
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*/
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#if defined(SMP) || !defined(_KERNEL)
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#define MPLOCKED "lock ; "
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#else
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#define MPLOCKED
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#endif
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/*
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* The assembly is volatilized to avoid code chunk removal by the compiler.
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* GCC aggressively reorders operations and memory clobbering is necessary
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* in order to avoid that for memory barriers.
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*/
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#define ATOMIC_ASM(NAME, TYPE, OP, CONS, V) \
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static __inline void \
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atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\
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{ \
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__asm __volatile(MPLOCKED OP \
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: "+m" (*p) \
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: CONS (V) \
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: "cc"); \
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} \
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\
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static __inline void \
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atomic_##NAME##_barr_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\
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{ \
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__asm __volatile(MPLOCKED OP \
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: "+m" (*p) \
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: CONS (V) \
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: "memory", "cc"); \
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} \
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struct __hack
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/*
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* Atomic compare and set, used by the mutex functions.
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*
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* cmpset:
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* if (*dst == expect)
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* *dst = src
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*
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* fcmpset:
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* if (*dst == *expect)
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* *dst = src
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* else
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* *expect = *dst
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*
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* Returns 0 on failure, non-zero on success.
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*/
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#define ATOMIC_CMPSET(TYPE, CONS) \
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static __inline int \
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atomic_cmpset_##TYPE(volatile u_##TYPE *dst, u_##TYPE expect, u_##TYPE src) \
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{ \
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u_char res; \
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\
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__asm __volatile( \
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" " MPLOCKED " " \
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" cmpxchg %3,%1 ; " \
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" sete %0 ; " \
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"# atomic_cmpset_" #TYPE " " \
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: "=q" (res), /* 0 */ \
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"+m" (*dst), /* 1 */ \
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"+a" (expect) /* 2 */ \
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: CONS (src) /* 3 */ \
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: "memory", "cc"); \
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return (res); \
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} \
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\
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static __inline int \
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atomic_fcmpset_##TYPE(volatile u_##TYPE *dst, u_##TYPE *expect, u_##TYPE src) \
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{ \
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u_char res; \
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\
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__asm __volatile( \
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" " MPLOCKED " " \
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" cmpxchg %3,%1 ; " \
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" sete %0 ; " \
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"# atomic_fcmpset_" #TYPE " " \
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: "=q" (res), /* 0 */ \
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"+m" (*dst), /* 1 */ \
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"+a" (*expect) /* 2 */ \
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: CONS (src) /* 3 */ \
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: "memory", "cc"); \
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return (res); \
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}
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ATOMIC_CMPSET(char, "q");
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ATOMIC_CMPSET(short, "r");
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ATOMIC_CMPSET(int, "r");
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/*
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* Atomically add the value of v to the integer pointed to by p and return
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* the previous value of *p.
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*/
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static __inline u_int
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atomic_fetchadd_int(volatile u_int *p, u_int v)
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{
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__asm __volatile(
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" " MPLOCKED " "
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" xaddl %0,%1 ; "
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"# atomic_fetchadd_int"
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: "+r" (v), /* 0 */
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"+m" (*p) /* 1 */
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: : "cc");
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return (v);
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}
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static __inline int
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atomic_testandset_int(volatile u_int *p, u_int v)
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{
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u_char res;
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__asm __volatile(
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" " MPLOCKED " "
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" btsl %2,%1 ; "
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" setc %0 ; "
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"# atomic_testandset_int"
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: "=q" (res), /* 0 */
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"+m" (*p) /* 1 */
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: "Ir" (v & 0x1f) /* 2 */
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: "cc");
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return (res);
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}
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static __inline int
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atomic_testandclear_int(volatile u_int *p, u_int v)
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{
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u_char res;
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__asm __volatile(
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" " MPLOCKED " "
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" btrl %2,%1 ; "
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" setc %0 ; "
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"# atomic_testandclear_int"
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: "=q" (res), /* 0 */
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"+m" (*p) /* 1 */
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: "Ir" (v & 0x1f) /* 2 */
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: "cc");
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return (res);
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}
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/*
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* We assume that a = b will do atomic loads and stores. Due to the
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* IA32 memory model, a simple store guarantees release semantics.
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*
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* However, a load may pass a store if they are performed on distinct
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* addresses, so we need Store/Load barrier for sequentially
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* consistent fences in SMP kernels. We use "lock addl $0,mem" for a
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* Store/Load barrier, as recommended by the AMD Software Optimization
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* Guide, and not mfence. In the kernel, we use a private per-cpu
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* cache line for "mem", to avoid introducing false data
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* dependencies. In user space, we use the word at the top of the
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* stack.
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*
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* For UP kernels, however, the memory of the single processor is
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* always consistent, so we only need to stop the compiler from
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* reordering accesses in a way that violates the semantics of acquire
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* and release.
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*/
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#if defined(_KERNEL)
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#if defined(SMP)
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#define __storeload_barrier() __mbk()
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#else /* _KERNEL && UP */
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#define __storeload_barrier() __compiler_membar()
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#endif /* SMP */
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#else /* !_KERNEL */
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#define __storeload_barrier() __mbu()
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#endif /* _KERNEL*/
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#define ATOMIC_LOAD(TYPE) \
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static __inline u_##TYPE \
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atomic_load_acq_##TYPE(volatile u_##TYPE *p) \
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{ \
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u_##TYPE res; \
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\
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res = *p; \
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__compiler_membar(); \
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return (res); \
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} \
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struct __hack
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#define ATOMIC_STORE(TYPE) \
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static __inline void \
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atomic_store_rel_##TYPE(volatile u_##TYPE *p, u_##TYPE v) \
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{ \
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\
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__compiler_membar(); \
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*p = v; \
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} \
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struct __hack
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static __inline void
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atomic_thread_fence_acq(void)
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{
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__compiler_membar();
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}
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static __inline void
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atomic_thread_fence_rel(void)
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{
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__compiler_membar();
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}
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static __inline void
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atomic_thread_fence_acq_rel(void)
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{
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__compiler_membar();
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}
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static __inline void
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atomic_thread_fence_seq_cst(void)
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{
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__storeload_barrier();
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}
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#ifdef _KERNEL
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#ifdef WANT_FUNCTIONS
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int atomic_cmpset_64_i386(volatile uint64_t *, uint64_t, uint64_t);
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int atomic_cmpset_64_i586(volatile uint64_t *, uint64_t, uint64_t);
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uint64_t atomic_load_acq_64_i386(volatile uint64_t *);
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uint64_t atomic_load_acq_64_i586(volatile uint64_t *);
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void atomic_store_rel_64_i386(volatile uint64_t *, uint64_t);
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void atomic_store_rel_64_i586(volatile uint64_t *, uint64_t);
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uint64_t atomic_swap_64_i386(volatile uint64_t *, uint64_t);
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uint64_t atomic_swap_64_i586(volatile uint64_t *, uint64_t);
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#endif
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/* I486 does not support SMP or CMPXCHG8B. */
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static __inline int
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atomic_cmpset_64_i386(volatile uint64_t *dst, uint64_t expect, uint64_t src)
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{
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volatile uint32_t *p;
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u_char res;
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p = (volatile uint32_t *)dst;
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__asm __volatile(
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" pushfl ; "
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" cli ; "
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" xorl %1,%%eax ; "
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" xorl %2,%%edx ; "
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" orl %%edx,%%eax ; "
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" jne 1f ; "
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" movl %4,%1 ; "
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" movl %5,%2 ; "
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"1: "
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" sete %3 ; "
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" popfl"
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: "+A" (expect), /* 0 */
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"+m" (*p), /* 1 */
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"+m" (*(p + 1)), /* 2 */
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"=q" (res) /* 3 */
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: "r" ((uint32_t)src), /* 4 */
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"r" ((uint32_t)(src >> 32)) /* 5 */
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: "memory", "cc");
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return (res);
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}
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static __inline uint64_t
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atomic_load_acq_64_i386(volatile uint64_t *p)
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{
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volatile uint32_t *q;
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uint64_t res;
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q = (volatile uint32_t *)p;
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__asm __volatile(
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" pushfl ; "
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" cli ; "
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" movl %1,%%eax ; "
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" movl %2,%%edx ; "
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" popfl"
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: "=&A" (res) /* 0 */
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: "m" (*q), /* 1 */
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"m" (*(q + 1)) /* 2 */
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: "memory");
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return (res);
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}
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static __inline void
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atomic_store_rel_64_i386(volatile uint64_t *p, uint64_t v)
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{
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volatile uint32_t *q;
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q = (volatile uint32_t *)p;
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__asm __volatile(
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" pushfl ; "
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" cli ; "
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" movl %%eax,%0 ; "
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" movl %%edx,%1 ; "
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|
" popfl"
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: "=m" (*q), /* 0 */
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"=m" (*(q + 1)) /* 1 */
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: "A" (v) /* 2 */
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|
: "memory");
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|
}
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static __inline uint64_t
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atomic_swap_64_i386(volatile uint64_t *p, uint64_t v)
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|
{
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volatile uint32_t *q;
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uint64_t res;
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q = (volatile uint32_t *)p;
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__asm __volatile(
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" pushfl ; "
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" cli ; "
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" movl %1,%%eax ; "
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" movl %2,%%edx ; "
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" movl %4,%2 ; "
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" movl %3,%1 ; "
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" popfl"
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: "=&A" (res), /* 0 */
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"+m" (*q), /* 1 */
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"+m" (*(q + 1)) /* 2 */
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: "r" ((uint32_t)v), /* 3 */
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"r" ((uint32_t)(v >> 32))); /* 4 */
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return (res);
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}
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static __inline int
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atomic_cmpset_64_i586(volatile uint64_t *dst, uint64_t expect, uint64_t src)
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|
{
|
|
u_char res;
|
|
|
|
__asm __volatile(
|
|
" " MPLOCKED " "
|
|
" cmpxchg8b %1 ; "
|
|
" sete %0"
|
|
: "=q" (res), /* 0 */
|
|
"+m" (*dst), /* 1 */
|
|
"+A" (expect) /* 2 */
|
|
: "b" ((uint32_t)src), /* 3 */
|
|
"c" ((uint32_t)(src >> 32)) /* 4 */
|
|
: "memory", "cc");
|
|
return (res);
|
|
}
|
|
|
|
static __inline uint64_t
|
|
atomic_load_acq_64_i586(volatile uint64_t *p)
|
|
{
|
|
uint64_t res;
|
|
|
|
__asm __volatile(
|
|
" movl %%ebx,%%eax ; "
|
|
" movl %%ecx,%%edx ; "
|
|
" " MPLOCKED " "
|
|
" cmpxchg8b %1"
|
|
: "=&A" (res), /* 0 */
|
|
"+m" (*p) /* 1 */
|
|
: : "memory", "cc");
|
|
return (res);
|
|
}
|
|
|
|
static __inline void
|
|
atomic_store_rel_64_i586(volatile uint64_t *p, uint64_t v)
|
|
{
|
|
|
|
__asm __volatile(
|
|
" movl %%eax,%%ebx ; "
|
|
" movl %%edx,%%ecx ; "
|
|
"1: "
|
|
" " MPLOCKED " "
|
|
" cmpxchg8b %0 ; "
|
|
" jne 1b"
|
|
: "+m" (*p), /* 0 */
|
|
"+A" (v) /* 1 */
|
|
: : "ebx", "ecx", "memory", "cc");
|
|
}
|
|
|
|
static __inline uint64_t
|
|
atomic_swap_64_i586(volatile uint64_t *p, uint64_t v)
|
|
{
|
|
|
|
__asm __volatile(
|
|
" movl %%eax,%%ebx ; "
|
|
" movl %%edx,%%ecx ; "
|
|
"1: "
|
|
" " MPLOCKED " "
|
|
" cmpxchg8b %0 ; "
|
|
" jne 1b"
|
|
: "+m" (*p), /* 0 */
|
|
"+A" (v) /* 1 */
|
|
: : "ebx", "ecx", "memory", "cc");
|
|
return (v);
|
|
}
|
|
|
|
static __inline int
|
|
atomic_cmpset_64(volatile uint64_t *dst, uint64_t expect, uint64_t src)
|
|
{
|
|
|
|
if ((cpu_feature & CPUID_CX8) == 0)
|
|
return (atomic_cmpset_64_i386(dst, expect, src));
|
|
else
|
|
return (atomic_cmpset_64_i586(dst, expect, src));
|
|
}
|
|
|
|
static __inline uint64_t
|
|
atomic_load_acq_64(volatile uint64_t *p)
|
|
{
|
|
|
|
if ((cpu_feature & CPUID_CX8) == 0)
|
|
return (atomic_load_acq_64_i386(p));
|
|
else
|
|
return (atomic_load_acq_64_i586(p));
|
|
}
|
|
|
|
static __inline void
|
|
atomic_store_rel_64(volatile uint64_t *p, uint64_t v)
|
|
{
|
|
|
|
if ((cpu_feature & CPUID_CX8) == 0)
|
|
atomic_store_rel_64_i386(p, v);
|
|
else
|
|
atomic_store_rel_64_i586(p, v);
|
|
}
|
|
|
|
static __inline uint64_t
|
|
atomic_swap_64(volatile uint64_t *p, uint64_t v)
|
|
{
|
|
|
|
if ((cpu_feature & CPUID_CX8) == 0)
|
|
return (atomic_swap_64_i386(p, v));
|
|
else
|
|
return (atomic_swap_64_i586(p, v));
|
|
}
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* KLD_MODULE || !__GNUCLIKE_ASM */
|
|
|
|
ATOMIC_ASM(set, char, "orb %b1,%0", "iq", v);
|
|
ATOMIC_ASM(clear, char, "andb %b1,%0", "iq", ~v);
|
|
ATOMIC_ASM(add, char, "addb %b1,%0", "iq", v);
|
|
ATOMIC_ASM(subtract, char, "subb %b1,%0", "iq", v);
|
|
|
|
ATOMIC_ASM(set, short, "orw %w1,%0", "ir", v);
|
|
ATOMIC_ASM(clear, short, "andw %w1,%0", "ir", ~v);
|
|
ATOMIC_ASM(add, short, "addw %w1,%0", "ir", v);
|
|
ATOMIC_ASM(subtract, short, "subw %w1,%0", "ir", v);
|
|
|
|
ATOMIC_ASM(set, int, "orl %1,%0", "ir", v);
|
|
ATOMIC_ASM(clear, int, "andl %1,%0", "ir", ~v);
|
|
ATOMIC_ASM(add, int, "addl %1,%0", "ir", v);
|
|
ATOMIC_ASM(subtract, int, "subl %1,%0", "ir", v);
|
|
|
|
ATOMIC_ASM(set, long, "orl %1,%0", "ir", v);
|
|
ATOMIC_ASM(clear, long, "andl %1,%0", "ir", ~v);
|
|
ATOMIC_ASM(add, long, "addl %1,%0", "ir", v);
|
|
ATOMIC_ASM(subtract, long, "subl %1,%0", "ir", v);
|
|
|
|
#define ATOMIC_LOADSTORE(TYPE) \
|
|
ATOMIC_LOAD(TYPE); \
|
|
ATOMIC_STORE(TYPE)
|
|
|
|
ATOMIC_LOADSTORE(char);
|
|
ATOMIC_LOADSTORE(short);
|
|
ATOMIC_LOADSTORE(int);
|
|
ATOMIC_LOADSTORE(long);
|
|
|
|
#undef ATOMIC_ASM
|
|
#undef ATOMIC_LOAD
|
|
#undef ATOMIC_STORE
|
|
#undef ATOMIC_LOADSTORE
|
|
|
|
#ifndef WANT_FUNCTIONS
|
|
|
|
static __inline int
|
|
atomic_cmpset_long(volatile u_long *dst, u_long expect, u_long src)
|
|
{
|
|
|
|
return (atomic_cmpset_int((volatile u_int *)dst, (u_int)expect,
|
|
(u_int)src));
|
|
}
|
|
|
|
static __inline u_long
|
|
atomic_fetchadd_long(volatile u_long *p, u_long v)
|
|
{
|
|
|
|
return (atomic_fetchadd_int((volatile u_int *)p, (u_int)v));
|
|
}
|
|
|
|
static __inline int
|
|
atomic_testandset_long(volatile u_long *p, u_int v)
|
|
{
|
|
|
|
return (atomic_testandset_int((volatile u_int *)p, v));
|
|
}
|
|
|
|
static __inline int
|
|
atomic_testandclear_long(volatile u_long *p, u_int v)
|
|
{
|
|
|
|
return (atomic_testandclear_int((volatile u_int *)p, v));
|
|
}
|
|
|
|
/* Read the current value and store a new value in the destination. */
|
|
#ifdef __GNUCLIKE_ASM
|
|
|
|
static __inline u_int
|
|
atomic_swap_int(volatile u_int *p, u_int v)
|
|
{
|
|
|
|
__asm __volatile(
|
|
" xchgl %1,%0 ; "
|
|
"# atomic_swap_int"
|
|
: "+r" (v), /* 0 */
|
|
"+m" (*p)); /* 1 */
|
|
return (v);
|
|
}
|
|
|
|
static __inline u_long
|
|
atomic_swap_long(volatile u_long *p, u_long v)
|
|
{
|
|
|
|
return (atomic_swap_int((volatile u_int *)p, (u_int)v));
|
|
}
|
|
|
|
#else /* !__GNUCLIKE_ASM */
|
|
|
|
u_int atomic_swap_int(volatile u_int *p, u_int v);
|
|
u_long atomic_swap_long(volatile u_long *p, u_long v);
|
|
|
|
#endif /* __GNUCLIKE_ASM */
|
|
|
|
#define atomic_set_acq_char atomic_set_barr_char
|
|
#define atomic_set_rel_char atomic_set_barr_char
|
|
#define atomic_clear_acq_char atomic_clear_barr_char
|
|
#define atomic_clear_rel_char atomic_clear_barr_char
|
|
#define atomic_add_acq_char atomic_add_barr_char
|
|
#define atomic_add_rel_char atomic_add_barr_char
|
|
#define atomic_subtract_acq_char atomic_subtract_barr_char
|
|
#define atomic_subtract_rel_char atomic_subtract_barr_char
|
|
#define atomic_cmpset_acq_char atomic_cmpset_char
|
|
#define atomic_cmpset_rel_char atomic_cmpset_char
|
|
#define atomic_fcmpset_acq_char atomic_fcmpset_char
|
|
#define atomic_fcmpset_rel_char atomic_fcmpset_char
|
|
|
|
#define atomic_set_acq_short atomic_set_barr_short
|
|
#define atomic_set_rel_short atomic_set_barr_short
|
|
#define atomic_clear_acq_short atomic_clear_barr_short
|
|
#define atomic_clear_rel_short atomic_clear_barr_short
|
|
#define atomic_add_acq_short atomic_add_barr_short
|
|
#define atomic_add_rel_short atomic_add_barr_short
|
|
#define atomic_subtract_acq_short atomic_subtract_barr_short
|
|
#define atomic_subtract_rel_short atomic_subtract_barr_short
|
|
#define atomic_cmpset_acq_short atomic_cmpset_short
|
|
#define atomic_cmpset_rel_short atomic_cmpset_short
|
|
#define atomic_fcmpset_acq_short atomic_fcmpset_short
|
|
#define atomic_fcmpset_rel_short atomic_fcmpset_short
|
|
|
|
#define atomic_set_acq_int atomic_set_barr_int
|
|
#define atomic_set_rel_int atomic_set_barr_int
|
|
#define atomic_clear_acq_int atomic_clear_barr_int
|
|
#define atomic_clear_rel_int atomic_clear_barr_int
|
|
#define atomic_add_acq_int atomic_add_barr_int
|
|
#define atomic_add_rel_int atomic_add_barr_int
|
|
#define atomic_subtract_acq_int atomic_subtract_barr_int
|
|
#define atomic_subtract_rel_int atomic_subtract_barr_int
|
|
#define atomic_cmpset_acq_int atomic_cmpset_int
|
|
#define atomic_cmpset_rel_int atomic_cmpset_int
|
|
#define atomic_fcmpset_acq_int atomic_fcmpset_int
|
|
#define atomic_fcmpset_rel_int atomic_fcmpset_int
|
|
|
|
#define atomic_set_acq_long atomic_set_barr_long
|
|
#define atomic_set_rel_long atomic_set_barr_long
|
|
#define atomic_clear_acq_long atomic_clear_barr_long
|
|
#define atomic_clear_rel_long atomic_clear_barr_long
|
|
#define atomic_add_acq_long atomic_add_barr_long
|
|
#define atomic_add_rel_long atomic_add_barr_long
|
|
#define atomic_subtract_acq_long atomic_subtract_barr_long
|
|
#define atomic_subtract_rel_long atomic_subtract_barr_long
|
|
#define atomic_cmpset_acq_long atomic_cmpset_long
|
|
#define atomic_cmpset_rel_long atomic_cmpset_long
|
|
#define atomic_fcmpset_acq_long atomic_fcmpset_long
|
|
#define atomic_fcmpset_rel_long atomic_fcmpset_long
|
|
|
|
#define atomic_readandclear_int(p) atomic_swap_int(p, 0)
|
|
#define atomic_readandclear_long(p) atomic_swap_long(p, 0)
|
|
|
|
/* Operations on 8-bit bytes. */
|
|
#define atomic_set_8 atomic_set_char
|
|
#define atomic_set_acq_8 atomic_set_acq_char
|
|
#define atomic_set_rel_8 atomic_set_rel_char
|
|
#define atomic_clear_8 atomic_clear_char
|
|
#define atomic_clear_acq_8 atomic_clear_acq_char
|
|
#define atomic_clear_rel_8 atomic_clear_rel_char
|
|
#define atomic_add_8 atomic_add_char
|
|
#define atomic_add_acq_8 atomic_add_acq_char
|
|
#define atomic_add_rel_8 atomic_add_rel_char
|
|
#define atomic_subtract_8 atomic_subtract_char
|
|
#define atomic_subtract_acq_8 atomic_subtract_acq_char
|
|
#define atomic_subtract_rel_8 atomic_subtract_rel_char
|
|
#define atomic_load_acq_8 atomic_load_acq_char
|
|
#define atomic_store_rel_8 atomic_store_rel_char
|
|
#define atomic_cmpset_8 atomic_cmpset_char
|
|
#define atomic_cmpset_acq_8 atomic_cmpset_acq_char
|
|
#define atomic_cmpset_rel_8 atomic_cmpset_rel_char
|
|
#define atomic_fcmpset_8 atomic_fcmpset_char
|
|
#define atomic_fcmpset_acq_8 atomic_fcmpset_acq_char
|
|
#define atomic_fcmpset_rel_8 atomic_fcmpset_rel_char
|
|
|
|
/* Operations on 16-bit words. */
|
|
#define atomic_set_16 atomic_set_short
|
|
#define atomic_set_acq_16 atomic_set_acq_short
|
|
#define atomic_set_rel_16 atomic_set_rel_short
|
|
#define atomic_clear_16 atomic_clear_short
|
|
#define atomic_clear_acq_16 atomic_clear_acq_short
|
|
#define atomic_clear_rel_16 atomic_clear_rel_short
|
|
#define atomic_add_16 atomic_add_short
|
|
#define atomic_add_acq_16 atomic_add_acq_short
|
|
#define atomic_add_rel_16 atomic_add_rel_short
|
|
#define atomic_subtract_16 atomic_subtract_short
|
|
#define atomic_subtract_acq_16 atomic_subtract_acq_short
|
|
#define atomic_subtract_rel_16 atomic_subtract_rel_short
|
|
#define atomic_load_acq_16 atomic_load_acq_short
|
|
#define atomic_store_rel_16 atomic_store_rel_short
|
|
#define atomic_cmpset_16 atomic_cmpset_short
|
|
#define atomic_cmpset_acq_16 atomic_cmpset_acq_short
|
|
#define atomic_cmpset_rel_16 atomic_cmpset_rel_short
|
|
#define atomic_fcmpset_16 atomic_fcmpset_short
|
|
#define atomic_fcmpset_acq_16 atomic_fcmpset_acq_short
|
|
#define atomic_fcmpset_rel_16 atomic_fcmpset_rel_short
|
|
|
|
/* Operations on 32-bit double words. */
|
|
#define atomic_set_32 atomic_set_int
|
|
#define atomic_set_acq_32 atomic_set_acq_int
|
|
#define atomic_set_rel_32 atomic_set_rel_int
|
|
#define atomic_clear_32 atomic_clear_int
|
|
#define atomic_clear_acq_32 atomic_clear_acq_int
|
|
#define atomic_clear_rel_32 atomic_clear_rel_int
|
|
#define atomic_add_32 atomic_add_int
|
|
#define atomic_add_acq_32 atomic_add_acq_int
|
|
#define atomic_add_rel_32 atomic_add_rel_int
|
|
#define atomic_subtract_32 atomic_subtract_int
|
|
#define atomic_subtract_acq_32 atomic_subtract_acq_int
|
|
#define atomic_subtract_rel_32 atomic_subtract_rel_int
|
|
#define atomic_load_acq_32 atomic_load_acq_int
|
|
#define atomic_store_rel_32 atomic_store_rel_int
|
|
#define atomic_cmpset_32 atomic_cmpset_int
|
|
#define atomic_cmpset_acq_32 atomic_cmpset_acq_int
|
|
#define atomic_cmpset_rel_32 atomic_cmpset_rel_int
|
|
#define atomic_fcmpset_32 atomic_fcmpset_int
|
|
#define atomic_fcmpset_acq_32 atomic_fcmpset_acq_int
|
|
#define atomic_fcmpset_rel_32 atomic_fcmpset_rel_int
|
|
#define atomic_swap_32 atomic_swap_int
|
|
#define atomic_readandclear_32 atomic_readandclear_int
|
|
#define atomic_fetchadd_32 atomic_fetchadd_int
|
|
#define atomic_testandset_32 atomic_testandset_int
|
|
#define atomic_testandclear_32 atomic_testandclear_int
|
|
|
|
/* Operations on pointers. */
|
|
#define atomic_set_ptr(p, v) \
|
|
atomic_set_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_set_acq_ptr(p, v) \
|
|
atomic_set_acq_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_set_rel_ptr(p, v) \
|
|
atomic_set_rel_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_clear_ptr(p, v) \
|
|
atomic_clear_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_clear_acq_ptr(p, v) \
|
|
atomic_clear_acq_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_clear_rel_ptr(p, v) \
|
|
atomic_clear_rel_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_add_ptr(p, v) \
|
|
atomic_add_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_add_acq_ptr(p, v) \
|
|
atomic_add_acq_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_add_rel_ptr(p, v) \
|
|
atomic_add_rel_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_subtract_ptr(p, v) \
|
|
atomic_subtract_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_subtract_acq_ptr(p, v) \
|
|
atomic_subtract_acq_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_subtract_rel_ptr(p, v) \
|
|
atomic_subtract_rel_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_load_acq_ptr(p) \
|
|
atomic_load_acq_int((volatile u_int *)(p))
|
|
#define atomic_store_rel_ptr(p, v) \
|
|
atomic_store_rel_int((volatile u_int *)(p), (v))
|
|
#define atomic_cmpset_ptr(dst, old, new) \
|
|
atomic_cmpset_int((volatile u_int *)(dst), (u_int)(old), (u_int)(new))
|
|
#define atomic_cmpset_acq_ptr(dst, old, new) \
|
|
atomic_cmpset_acq_int((volatile u_int *)(dst), (u_int)(old), \
|
|
(u_int)(new))
|
|
#define atomic_cmpset_rel_ptr(dst, old, new) \
|
|
atomic_cmpset_rel_int((volatile u_int *)(dst), (u_int)(old), \
|
|
(u_int)(new))
|
|
#define atomic_fcmpset_ptr(dst, old, new) \
|
|
atomic_fcmpset_int((volatile u_int *)(dst), (u_int *)(old), (u_int)(new))
|
|
#define atomic_fcmpset_acq_ptr(dst, old, new) \
|
|
atomic_fcmpset_acq_int((volatile u_int *)(dst), (u_int *)(old), \
|
|
(u_int)(new))
|
|
#define atomic_fcmpset_rel_ptr(dst, old, new) \
|
|
atomic_fcmpset_rel_int((volatile u_int *)(dst), (u_int *)(old), \
|
|
(u_int)(new))
|
|
#define atomic_swap_ptr(p, v) \
|
|
atomic_swap_int((volatile u_int *)(p), (u_int)(v))
|
|
#define atomic_readandclear_ptr(p) \
|
|
atomic_readandclear_int((volatile u_int *)(p))
|
|
|
|
#endif /* !WANT_FUNCTIONS */
|
|
|
|
#if defined(_KERNEL)
|
|
#define mb() __mbk()
|
|
#define wmb() __mbk()
|
|
#define rmb() __mbk()
|
|
#else
|
|
#define mb() __mbu()
|
|
#define wmb() __mbu()
|
|
#define rmb() __mbu()
|
|
#endif
|
|
|
|
#endif /* !_MACHINE_ATOMIC_H_ */
|