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Instead of having separate do_sync functions for ARM_ARCH 6 vs.

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ARM_ARCH >= 7, use the dmb() macro defined in machine/atomic.h

Submitted by:	Steve Kiernan <stevek@juniper.net>
Reviewed by:	imp@
Differential Revision:	https://reviews.freebsd.org/D3355
This commit is contained in:
Marcel Moolenaar 2015-08-13 14:53:29 +00:00
parent 5b44efcf47
commit ea205656bd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=286726
1 changed files with 2 additions and 8 deletions
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10
sys/arm/arm/stdatomic.c
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@ -32,6 +32,7 @@ __FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <machine/acle-compat.h>
#include <machine/atomic.h>
#include <machine/cpufunc.h>
#include <machine/sysarch.h>
@ -67,19 +68,12 @@ do_sync(void)
__asm volatile ("" : : : "memory");
}
#elif __ARM_ARCH >= 7
static inline void
do_sync(void)
{
__asm volatile ("dmb" : : : "memory");
}
#elif __ARM_ARCH >= 6
static inline void
do_sync(void)
{
__asm volatile ("mcr p15, 0, %0, c7, c10, 5" : : "r" (0) : "memory");
dmb();
}
#endif