svn commit: r232462 - projects/armv6/sys/arm/include
Olivier Houchard
cognet at FreeBSD.org
Sat Mar 3 14:02:34 UTC 2012
Author: cognet
Date: Sat Mar 3 14:02:34 2012
New Revision: 232462
URL: http://svn.freebsd.org/changeset/base/232462
Log:
Grrr, we can't use dmb for armv6.
Of course, our toolchain is too ancient to support armv7, so we have to use
this for armv7 userland, as well.
Modified:
projects/armv6/sys/arm/include/atomic.h
Modified: projects/armv6/sys/arm/include/atomic.h
==============================================================================
--- projects/armv6/sys/arm/include/atomic.h Sat Mar 3 13:51:51 2012 (r232461)
+++ projects/armv6/sys/arm/include/atomic.h Sat Mar 3 14:02:34 2012 (r232462)
@@ -67,7 +67,11 @@ static __inline void
__do_dmb(void)
{
+#if ARM_ARCH_7A
__asm __volatile("dmb" : : : "memory");
+#else
+ __asm __volatile("mcr p15, 0, r0, c7, c10, 5" : : : "memory");
+#endif
}
#define ATOMIC_ACQ_REL(NAME, WIDTH) \
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