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* sysdeps/s390/bits/atomic.h (__arch_compare_and_exchange_val_32_acq,

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__arch_compare_and_exchange_val_64_acq): Add "memory" clobber.
2008-11-03  Michael Matz  <matz@suse.de>

	* sysdeps/s390/bits/atomic.h (__arch_compare_and_exchange_val_32_acq,
	__arch_compare_and_exchange_val_64_acq): Add "memory" clobber.
This commit is contained in:
Jakub Jelinek 2008-11-07 15:18:47 +00:00
parent 09f66a4f52
commit a90695507e
2 changed files with 7 additions and 2 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2008-11-03 Michael Matz <matz@suse.de>
* sysdeps/s390/bits/atomic.h (__arch_compare_and_exchange_val_32_acq,
__arch_compare_and_exchange_val_64_acq): Add "memory" clobber.
2008-11-07 Jakub Jelinek <jakub@redhat.com>
* include/stdio.h (__builtin_fwrite, __builtin_fwrite_unlocked):

4
sysdeps/s390/bits/atomic.h
View File

@ -56,7 +56,7 @@ typedef uintmax_t uatomic_max_t;
__typeof (*mem) __archold = (oldval); \
__asm __volatile ("cs %0,%2,%1" \
: "+d" (__archold), "=Q" (*__archmem) \
: "d" (newval), "m" (*__archmem) : "cc" ); \
: "d" (newval), "m" (*__archmem) : "cc", "memory" ); \
__archold; })
#ifdef __s390x__
@ -65,7 +65,7 @@ typedef uintmax_t uatomic_max_t;
__typeof (*mem) __archold = (oldval); \
__asm __volatile ("csg %0,%2,%1" \
: "+d" (__archold), "=Q" (*__archmem) \
: "d" ((long) (newval)), "m" (*__archmem) : "cc" ); \
: "d" ((long) (newval)), "m" (*__archmem) : "cc", "memory" ); \
__archold; })
#else
/* For 31 bit we do not really need 64-bit compare-and-exchange. We can