upstream/opnsense-src
1
0
Fork 0
mirror of https://github.com/opnsense/src.git synced 2026-05-28 04:12:45 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions
opnsense-src/sys/arm64/include/atomic.h
Olivier Certner 1fc5db8e9f
atomics: Constify loads 
In order to match reality, allow using these functions with pointers on
const objects, and bring us closer to C11.

Remove the '+' modifier in the atomic_load_acq_64_i586()'s inline asm
statement's constraint for '*p' (the value to load).  CMPXCHG8B always
writes back some value, even when the value exchange does not happen in
which case what was read is written back.  atomic_load_acq_64_i586()
further takes care of the operation atomically writing back the same
value that was read in any case.  All in all, this makes the inline
asm's write back undetectable by any other code, whether executing on
other CPUs or code on the same CPU before and after the call to
atomic_load_acq_64_i586(), except for the fact that CMPXCHG8B will
trigger a #GP(0) if the memory address is part of a read-only mapping.
This unfortunate property is however out of scope of the C abstract
machine, and in particular independent of whether the 'uint64_t' pointed
to is declared 'const' or not.

Approved by:    markj (mentor)
MFC after:      5 days
Sponsored by:   The FreeBSD Foundation
Differential Revision:  https://reviews.freebsd.org/D46887

(cherry picked from commit 5e9a82e898d55816c366cfa3ffbca84f02569fe5)
2025-01-16 19:06:53 +01:00

679 lines
21 KiB
C
Raw Blame History

/*-
* Copyright (c) 2013 Andrew Turner <andrew@freebsd.org>
* 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.
*/
#ifdef __arm__
#include <arm/atomic.h>
#else /* !__arm__ */
#ifndef _MACHINE_ATOMIC_H_
#define _MACHINE_ATOMIC_H_
#define isb() __asm __volatile("isb" : : : "memory")
/*
* Options for DMB and DSB:
* oshld Outer Shareable, load
* oshst Outer Shareable, store
* osh Outer Shareable, all
* nshld Non-shareable, load
* nshst Non-shareable, store
* nsh Non-shareable, all
* ishld Inner Shareable, load
* ishst Inner Shareable, store
* ish Inner Shareable, all
* ld Full system, load
* st Full system, store
* sy Full system, all
*/
#define dsb(opt) __asm __volatile("dsb " __STRING(opt) : : : "memory")
#define dmb(opt) __asm __volatile("dmb " __STRING(opt) : : : "memory")
#define mb() dmb(sy) /* Full system memory barrier all */
#define wmb() dmb(st) /* Full system memory barrier store */
#define rmb() dmb(ld) /* Full system memory barrier load */
#ifdef _KERNEL
extern _Bool lse_supported;
#endif
#if defined(SAN_NEEDS_INTERCEPTORS) && !defined(SAN_RUNTIME)
#include <sys/atomic_san.h>
#else
#include <sys/atomic_common.h>
#if defined(__ARM_FEATURE_ATOMICS)
#define _ATOMIC_LSE_SUPPORTED 1
#elif defined(_KERNEL)
#ifdef LSE_ATOMICS
#define _ATOMIC_LSE_SUPPORTED 1
#else
#define _ATOMIC_LSE_SUPPORTED lse_supported
#endif
#else
#define _ATOMIC_LSE_SUPPORTED 0
#endif
#define _ATOMIC_OP_PROTO(t, op, bar, flav) \
static __inline void \
atomic_##op##_##bar##t##flav(volatile uint##t##_t *p, uint##t##_t val)
#define _ATOMIC_OP_IMPL(t, w, s, op, llsc_asm_op, lse_asm_op, pre, bar, a, l) \
_ATOMIC_OP_PROTO(t, op, bar, _llsc) \
{ \
uint##t##_t tmp; \
int res; \
\
pre; \
__asm __volatile( \
"1: ld"#a"xr"#s" %"#w"0, [%2]\n" \
" "#llsc_asm_op" %"#w"0, %"#w"0, %"#w"3\n" \
" st"#l"xr"#s" %w1, %"#w"0, [%2]\n" \
" cbnz %w1, 1b\n" \
: "=&r"(tmp), "=&r"(res) \
: "r" (p), "r" (val) \
: "memory" \
); \
} \
\
_ATOMIC_OP_PROTO(t, op, bar, _lse) \
{ \
uint##t##_t tmp; \
\
pre; \
__asm __volatile( \
".arch_extension lse\n" \
"ld"#lse_asm_op#a#l#s" %"#w"2, %"#w"0, [%1]\n" \
".arch_extension nolse\n" \
: "=r" (tmp) \
: "r" (p), "r" (val) \
: "memory" \
); \
} \
\
_ATOMIC_OP_PROTO(t, op, bar, ) \
{ \
if (_ATOMIC_LSE_SUPPORTED) \
atomic_##op##_##bar##t##_lse(p, val); \
else \
atomic_##op##_##bar##t##_llsc(p, val); \
}
#define __ATOMIC_OP(op, llsc_asm_op, lse_asm_op, pre, bar, a, l) \
_ATOMIC_OP_IMPL(8, w, b, op, llsc_asm_op, lse_asm_op, pre, \
bar, a, l) \
_ATOMIC_OP_IMPL(16, w, h, op, llsc_asm_op, lse_asm_op, pre, \
bar, a, l) \
_ATOMIC_OP_IMPL(32, w, , op, llsc_asm_op, lse_asm_op, pre, \
bar, a, l) \
_ATOMIC_OP_IMPL(64, , , op, llsc_asm_op, lse_asm_op, pre, \
bar, a, l)
#define _ATOMIC_OP(op, llsc_asm_op, lse_asm_op, pre) \
__ATOMIC_OP(op, llsc_asm_op, lse_asm_op, pre, , , ) \
__ATOMIC_OP(op, llsc_asm_op, lse_asm_op, pre, acq_, a, ) \
__ATOMIC_OP(op, llsc_asm_op, lse_asm_op, pre, rel_, , l)
_ATOMIC_OP(add, add, add, )
_ATOMIC_OP(clear, bic, clr, )
_ATOMIC_OP(set, orr, set, )
_ATOMIC_OP(subtract, add, add, val = -val)
#define _ATOMIC_CMPSET_PROTO(t, bar, flav) \
static __inline int \
atomic_cmpset_##bar##t##flav(volatile uint##t##_t *p, \
uint##t##_t cmpval, uint##t##_t newval)
#define _ATOMIC_FCMPSET_PROTO(t, bar, flav) \
static __inline int \
atomic_fcmpset_##bar##t##flav(volatile uint##t##_t *p, \
uint##t##_t *cmpval, uint##t##_t newval)
#define _ATOMIC_CMPSET_IMPL(t, w, s, bar, a, l) \
_ATOMIC_CMPSET_PROTO(t, bar, _llsc) \
{ \
uint##t##_t tmp; \
int res; \
\
__asm __volatile( \
"1: mov %w1, #1\n" \
" ld"#a"xr"#s" %"#w"0, [%2]\n" \
" cmp %"#w"0, %"#w"3\n" \
" b.ne 2f\n" \
" st"#l"xr"#s" %w1, %"#w"4, [%2]\n" \
" cbnz %w1, 1b\n" \
"2:" \
: "=&r"(tmp), "=&r"(res) \
: "r" (p), "r" (cmpval), "r" (newval) \
: "cc", "memory" \
); \
\
return (!res); \
} \
\
_ATOMIC_CMPSET_PROTO(t, bar, _lse) \
{ \
uint##t##_t oldval; \
int res; \
\
oldval = cmpval; \
__asm __volatile( \
".arch_extension lse\n" \
"cas"#a#l#s" %"#w"1, %"#w"4, [%3]\n" \
"cmp %"#w"1, %"#w"2\n" \
"cset %w0, eq\n" \
".arch_extension nolse\n" \
: "=r" (res), "+&r" (cmpval) \
: "r" (oldval), "r" (p), "r" (newval) \
: "cc", "memory" \
); \
\
return (res); \
} \
\
_ATOMIC_CMPSET_PROTO(t, bar, ) \
{ \
if (_ATOMIC_LSE_SUPPORTED) \
return (atomic_cmpset_##bar##t##_lse(p, cmpval, \
newval)); \
else \
return (atomic_cmpset_##bar##t##_llsc(p, cmpval, \
newval)); \
} \
\
_ATOMIC_FCMPSET_PROTO(t, bar, _llsc) \
{ \
uint##t##_t _cmpval, tmp; \
int res; \
\
_cmpval = *cmpval; \
__asm __volatile( \
" mov %w1, #1\n" \
" ld"#a"xr"#s" %"#w"0, [%2]\n" \
" cmp %"#w"0, %"#w"3\n" \
" b.ne 1f\n" \
" st"#l"xr"#s" %w1, %"#w"4, [%2]\n" \
"1:" \
: "=&r"(tmp), "=&r"(res) \
: "r" (p), "r" (_cmpval), "r" (newval) \
: "cc", "memory" \
); \
*cmpval = tmp; \
\
return (!res); \
} \
\
_ATOMIC_FCMPSET_PROTO(t, bar, _lse) \
{ \
uint##t##_t _cmpval, tmp; \
int res; \
\
_cmpval = tmp = *cmpval; \
__asm __volatile( \
".arch_extension lse\n" \
"cas"#a#l#s" %"#w"1, %"#w"4, [%3]\n" \
"cmp %"#w"1, %"#w"2\n" \
"cset %w0, eq\n" \
".arch_extension nolse\n" \
: "=r" (res), "+&r" (tmp) \
: "r" (_cmpval), "r" (p), "r" (newval) \
: "cc", "memory" \
); \
*cmpval = tmp; \
\
return (res); \
} \
\
_ATOMIC_FCMPSET_PROTO(t, bar, ) \
{ \
if (_ATOMIC_LSE_SUPPORTED) \
return (atomic_fcmpset_##bar##t##_lse(p, cmpval, \
newval)); \
else \
return (atomic_fcmpset_##bar##t##_llsc(p, cmpval, \
newval)); \
}
#define _ATOMIC_CMPSET(bar, a, l) \
_ATOMIC_CMPSET_IMPL(8, w, b, bar, a, l) \
_ATOMIC_CMPSET_IMPL(16, w, h, bar, a, l) \
_ATOMIC_CMPSET_IMPL(32, w, , bar, a, l) \
_ATOMIC_CMPSET_IMPL(64, , , bar, a, l)
#define atomic_cmpset_8 atomic_cmpset_8
#define atomic_fcmpset_8 atomic_fcmpset_8
#define atomic_cmpset_16 atomic_cmpset_16
#define atomic_fcmpset_16 atomic_fcmpset_16
_ATOMIC_CMPSET( , , )
_ATOMIC_CMPSET(acq_, a, )
_ATOMIC_CMPSET(rel_, ,l)
#define _ATOMIC_FETCHADD_PROTO(t, flav) \
static __inline uint##t##_t \
atomic_fetchadd_##t##flav(volatile uint##t##_t *p, uint##t##_t val)
#define _ATOMIC_FETCHADD_IMPL(t, w) \
_ATOMIC_FETCHADD_PROTO(t, _llsc) \
{ \
uint##t##_t ret, tmp; \
int res; \
\
__asm __volatile( \
"1: ldxr %"#w"2, [%3]\n" \
" add %"#w"0, %"#w"2, %"#w"4\n" \
" stxr %w1, %"#w"0, [%3]\n" \
" cbnz %w1, 1b\n" \
: "=&r" (tmp), "=&r" (res), "=&r" (ret) \
: "r" (p), "r" (val) \
: "memory" \
); \
\
return (ret); \
} \
\
_ATOMIC_FETCHADD_PROTO(t, _lse) \
{ \
uint##t##_t ret; \
\
__asm __volatile( \
".arch_extension lse\n" \
"ldadd %"#w"2, %"#w"0, [%1]\n" \
".arch_extension nolse\n" \
: "=r" (ret) \
: "r" (p), "r" (val) \
: "memory" \
); \
\
return (ret); \
} \
\
_ATOMIC_FETCHADD_PROTO(t, ) \
{ \
if (_ATOMIC_LSE_SUPPORTED) \
return (atomic_fetchadd_##t##_lse(p, val)); \
else \
return (atomic_fetchadd_##t##_llsc(p, val)); \
}
_ATOMIC_FETCHADD_IMPL(32, w)
_ATOMIC_FETCHADD_IMPL(64, )
#define _ATOMIC_SWAP_PROTO(t, flav) \
static __inline uint##t##_t \
atomic_swap_##t##flav(volatile uint##t##_t *p, uint##t##_t val)
#define _ATOMIC_READANDCLEAR_PROTO(t, flav) \
static __inline uint##t##_t \
atomic_readandclear_##t##flav(volatile uint##t##_t *p)
#define _ATOMIC_SWAP_IMPL(t, w, zreg) \
_ATOMIC_SWAP_PROTO(t, _llsc) \
{ \
uint##t##_t ret; \
int res; \
\
__asm __volatile( \
"1: ldxr %"#w"1, [%2]\n" \
" stxr %w0, %"#w"3, [%2]\n" \
" cbnz %w0, 1b\n" \
: "=&r" (res), "=&r" (ret) \
: "r" (p), "r" (val) \
: "memory" \
); \
\
return (ret); \
} \
\
_ATOMIC_SWAP_PROTO(t, _lse) \
{ \
uint##t##_t ret; \
\
__asm __volatile( \
".arch_extension lse\n" \
"swp %"#w"2, %"#w"0, [%1]\n" \
".arch_extension nolse\n" \
: "=r" (ret) \
: "r" (p), "r" (val) \
: "memory" \
); \
\
return (ret); \
} \
\
_ATOMIC_SWAP_PROTO(t, ) \
{ \
if (_ATOMIC_LSE_SUPPORTED) \
return (atomic_swap_##t##_lse(p, val)); \
else \
return (atomic_swap_##t##_llsc(p, val)); \
} \
\
_ATOMIC_READANDCLEAR_PROTO(t, _llsc) \
{ \
uint##t##_t ret; \
int res; \
\
__asm __volatile( \
"1: ldxr %"#w"1, [%2]\n" \
" stxr %w0, "#zreg", [%2]\n" \
" cbnz %w0, 1b\n" \
: "=&r" (res), "=&r" (ret) \
: "r" (p) \
: "memory" \
); \
\
return (ret); \
} \
\
_ATOMIC_READANDCLEAR_PROTO(t, _lse) \
{ \
return (atomic_swap_##t##_lse(p, 0)); \
} \
\
_ATOMIC_READANDCLEAR_PROTO(t, ) \
{ \
if (_ATOMIC_LSE_SUPPORTED) \
return (atomic_readandclear_##t##_lse(p)); \
else \
return (atomic_readandclear_##t##_llsc(p)); \
}
_ATOMIC_SWAP_IMPL(32, w, wzr)
_ATOMIC_SWAP_IMPL(64, , xzr)
#define _ATOMIC_TEST_OP_PROTO(t, op, bar, flav) \
static __inline int \
atomic_testand##op##_##bar##t##flav(volatile uint##t##_t *p, u_int val)
#define _ATOMIC_TEST_OP_IMPL(t, w, op, llsc_asm_op, lse_asm_op, bar, a) \
_ATOMIC_TEST_OP_PROTO(t, op, bar, _llsc) \
{ \
uint##t##_t mask, old, tmp; \
int res; \
\
mask = ((uint##t##_t)1) << (val & (t - 1)); \
__asm __volatile( \
"1: ld"#a"xr %"#w"2, [%3]\n" \
" "#llsc_asm_op" %"#w"0, %"#w"2, %"#w"4\n" \
" stxr %w1, %"#w"0, [%3]\n" \
" cbnz %w1, 1b\n" \
: "=&r" (tmp), "=&r" (res), "=&r" (old) \
: "r" (p), "r" (mask) \
: "memory" \
); \
\
return ((old & mask) != 0); \
} \
\
_ATOMIC_TEST_OP_PROTO(t, op, bar, _lse) \
{ \
uint##t##_t mask, old; \
\
mask = ((uint##t##_t)1) << (val & (t - 1)); \
__asm __volatile( \
".arch_extension lse\n" \
"ld"#lse_asm_op#a" %"#w"2, %"#w"0, [%1]\n" \
".arch_extension nolse\n" \
: "=r" (old) \
: "r" (p), "r" (mask) \
: "memory" \
); \
\
return ((old & mask) != 0); \
} \
\
_ATOMIC_TEST_OP_PROTO(t, op, bar, ) \
{ \
if (_ATOMIC_LSE_SUPPORTED) \
return (atomic_testand##op##_##bar##t##_lse(p, val)); \
else \
return (atomic_testand##op##_##bar##t##_llsc(p, val)); \
}
#define _ATOMIC_TEST_OP(op, llsc_asm_op, lse_asm_op) \
_ATOMIC_TEST_OP_IMPL(32, w, op, llsc_asm_op, lse_asm_op, , ) \
_ATOMIC_TEST_OP_IMPL(32, w, op, llsc_asm_op, lse_asm_op, acq_, a) \
_ATOMIC_TEST_OP_IMPL(64, , op, llsc_asm_op, lse_asm_op, , ) \
_ATOMIC_TEST_OP_IMPL(64, , op, llsc_asm_op, lse_asm_op, acq_, a)
_ATOMIC_TEST_OP(clear, bic, clr)
_ATOMIC_TEST_OP(set, orr, set)
#define _ATOMIC_LOAD_ACQ_IMPL(t, w, s) \
static __inline uint##t##_t \
atomic_load_acq_##t(const volatile uint##t##_t *p) \
{ \
uint##t##_t ret; \
\
__asm __volatile( \
"ldar"#s" %"#w"0, [%1]\n" \
: "=&r" (ret) \
: "r" (p) \
: "memory"); \
\
return (ret); \
}
#define atomic_load_acq_8 atomic_load_acq_8
#define atomic_load_acq_16 atomic_load_acq_16
_ATOMIC_LOAD_ACQ_IMPL(8, w, b)
_ATOMIC_LOAD_ACQ_IMPL(16, w, h)
_ATOMIC_LOAD_ACQ_IMPL(32, w, )
_ATOMIC_LOAD_ACQ_IMPL(64, , )
#define _ATOMIC_STORE_REL_IMPL(t, w, s) \
static __inline void \
atomic_store_rel_##t(volatile uint##t##_t *p, uint##t##_t val) \
{ \
__asm __volatile( \
"stlr"#s" %"#w"0, [%1]\n" \
: \
: "r" (val), "r" (p) \
: "memory"); \
}
_ATOMIC_STORE_REL_IMPL(8, w, b)
_ATOMIC_STORE_REL_IMPL(16, w, h)
_ATOMIC_STORE_REL_IMPL(32, w, )
_ATOMIC_STORE_REL_IMPL(64, , )
#define atomic_add_char atomic_add_8
#define atomic_fcmpset_char atomic_fcmpset_8
#define atomic_clear_char atomic_clear_8
#define atomic_cmpset_char atomic_cmpset_8
#define atomic_fetchadd_char atomic_fetchadd_8
#define atomic_readandclear_char atomic_readandclear_8
#define atomic_set_char atomic_set_8
#define atomic_swap_char atomic_swap_8
#define atomic_subtract_char atomic_subtract_8
#define atomic_testandclear_char atomic_testandclear_8
#define atomic_testandset_char atomic_testandset_8
#define atomic_add_acq_char atomic_add_acq_8
#define atomic_fcmpset_acq_char atomic_fcmpset_acq_8
#define atomic_clear_acq_char atomic_clear_acq_8
#define atomic_cmpset_acq_char atomic_cmpset_acq_8
#define atomic_load_acq_char atomic_load_acq_8
#define atomic_set_acq_char atomic_set_acq_8
#define atomic_subtract_acq_char atomic_subtract_acq_8
#define atomic_testandset_acq_char atomic_testandset_acq_8
#define atomic_add_rel_char atomic_add_rel_8
#define atomic_fcmpset_rel_char atomic_fcmpset_rel_8
#define atomic_clear_rel_char atomic_clear_rel_8
#define atomic_cmpset_rel_char atomic_cmpset_rel_8
#define atomic_set_rel_char atomic_set_rel_8
#define atomic_subtract_rel_char atomic_subtract_rel_8
#define atomic_store_rel_char atomic_store_rel_8
#define atomic_add_short atomic_add_16
#define atomic_fcmpset_short atomic_fcmpset_16
#define atomic_clear_short atomic_clear_16
#define atomic_cmpset_short atomic_cmpset_16
#define atomic_fetchadd_short atomic_fetchadd_16
#define atomic_readandclear_short atomic_readandclear_16
#define atomic_set_short atomic_set_16
#define atomic_swap_short atomic_swap_16
#define atomic_subtract_short atomic_subtract_16
#define atomic_testandclear_short atomic_testandclear_16
#define atomic_testandset_short atomic_testandset_16
#define atomic_add_acq_short atomic_add_acq_16
#define atomic_fcmpset_acq_short atomic_fcmpset_acq_16
#define atomic_clear_acq_short atomic_clear_acq_16
#define atomic_cmpset_acq_short atomic_cmpset_acq_16
#define atomic_load_acq_short atomic_load_acq_16
#define atomic_set_acq_short atomic_set_acq_16
#define atomic_subtract_acq_short atomic_subtract_acq_16
#define atomic_testandset_acq_short atomic_testandset_acq_16
#define atomic_add_rel_short atomic_add_rel_16
#define atomic_fcmpset_rel_short atomic_fcmpset_rel_16
#define atomic_clear_rel_short atomic_clear_rel_16
#define atomic_cmpset_rel_short atomic_cmpset_rel_16
#define atomic_set_rel_short atomic_set_rel_16
#define atomic_subtract_rel_short atomic_subtract_rel_16
#define atomic_store_rel_short atomic_store_rel_16
#define atomic_add_int atomic_add_32
#define atomic_fcmpset_int atomic_fcmpset_32
#define atomic_clear_int atomic_clear_32
#define atomic_cmpset_int atomic_cmpset_32
#define atomic_fetchadd_int atomic_fetchadd_32
#define atomic_readandclear_int atomic_readandclear_32
#define atomic_set_int atomic_set_32
#define atomic_swap_int atomic_swap_32
#define atomic_subtract_int atomic_subtract_32
#define atomic_testandclear_int atomic_testandclear_32
#define atomic_testandset_int atomic_testandset_32
#define atomic_add_acq_int atomic_add_acq_32
#define atomic_fcmpset_acq_int atomic_fcmpset_acq_32
#define atomic_clear_acq_int atomic_clear_acq_32
#define atomic_cmpset_acq_int atomic_cmpset_acq_32
#define atomic_load_acq_int atomic_load_acq_32
#define atomic_set_acq_int atomic_set_acq_32
#define atomic_subtract_acq_int atomic_subtract_acq_32
#define atomic_testandset_acq_int atomic_testandset_acq_32
#define atomic_add_rel_int atomic_add_rel_32
#define atomic_fcmpset_rel_int atomic_fcmpset_rel_32
#define atomic_clear_rel_int atomic_clear_rel_32
#define atomic_cmpset_rel_int atomic_cmpset_rel_32
#define atomic_set_rel_int atomic_set_rel_32
#define atomic_subtract_rel_int atomic_subtract_rel_32
#define atomic_store_rel_int atomic_store_rel_32
#define atomic_add_long atomic_add_64
#define atomic_fcmpset_long atomic_fcmpset_64
#define atomic_clear_long atomic_clear_64
#define atomic_cmpset_long atomic_cmpset_64
#define atomic_fetchadd_long atomic_fetchadd_64
#define atomic_readandclear_long atomic_readandclear_64
#define atomic_set_long atomic_set_64
#define atomic_swap_long atomic_swap_64
#define atomic_subtract_long atomic_subtract_64
#define atomic_testandclear_long atomic_testandclear_64
#define atomic_testandset_long atomic_testandset_64
#define atomic_add_ptr atomic_add_64
#define atomic_fcmpset_ptr atomic_fcmpset_64
#define atomic_clear_ptr atomic_clear_64
#define atomic_cmpset_ptr atomic_cmpset_64
#define atomic_fetchadd_ptr atomic_fetchadd_64
#define atomic_readandclear_ptr atomic_readandclear_64
#define atomic_set_ptr atomic_set_64
#define atomic_swap_ptr atomic_swap_64
#define atomic_subtract_ptr atomic_subtract_64
#define atomic_testandclear_ptr atomic_testandclear_64
#define atomic_testandset_ptr atomic_testandset_64
#define atomic_add_acq_long atomic_add_acq_64
#define atomic_fcmpset_acq_long atomic_fcmpset_acq_64
#define atomic_clear_acq_long atomic_clear_acq_64
#define atomic_cmpset_acq_long atomic_cmpset_acq_64
#define atomic_load_acq_long atomic_load_acq_64
#define atomic_set_acq_long atomic_set_acq_64
#define atomic_subtract_acq_long atomic_subtract_acq_64
#define atomic_testandset_acq_long atomic_testandset_acq_64
#define atomic_add_acq_ptr atomic_add_acq_64
#define atomic_fcmpset_acq_ptr atomic_fcmpset_acq_64
#define atomic_clear_acq_ptr atomic_clear_acq_64
#define atomic_cmpset_acq_ptr atomic_cmpset_acq_64
#define atomic_load_acq_ptr atomic_load_acq_64
#define atomic_set_acq_ptr atomic_set_acq_64
#define atomic_subtract_acq_ptr atomic_subtract_acq_64
#define atomic_add_rel_long atomic_add_rel_64
#define atomic_fcmpset_rel_long atomic_fcmpset_rel_64
#define atomic_clear_rel_long atomic_clear_rel_64
#define atomic_cmpset_rel_long atomic_cmpset_rel_64
#define atomic_set_rel_long atomic_set_rel_64
#define atomic_subtract_rel_long atomic_subtract_rel_64
#define atomic_store_rel_long atomic_store_rel_64
#define atomic_add_rel_ptr atomic_add_rel_64
#define atomic_fcmpset_rel_ptr atomic_fcmpset_rel_64
#define atomic_clear_rel_ptr atomic_clear_rel_64
#define atomic_cmpset_rel_ptr atomic_cmpset_rel_64
#define atomic_set_rel_ptr atomic_set_rel_64
#define atomic_subtract_rel_ptr atomic_subtract_rel_64
#define atomic_store_rel_ptr atomic_store_rel_64
static __inline void
atomic_thread_fence_acq(void)
{
dmb(ld);
}
static __inline void
atomic_thread_fence_rel(void)
{
dmb(sy);
}
static __inline void
atomic_thread_fence_acq_rel(void)
{
dmb(sy);
}
static __inline void
atomic_thread_fence_seq_cst(void)
{
dmb(sy);
}
#endif /* KCSAN && !KCSAN_RUNTIME */
#endif /* _MACHINE_ATOMIC_H_ */
#endif /* !__arm__ */
Reference in a new issue View git blame Copy permalink