Author: mjg
Date: Thu Feb 2 01:33:08 2017
New Revision: 313080
URL: https://svnweb.freebsd.org/changeset/base/313080
Log:
i386: fixup fcmpset
An incorrect output specifier was used which worked with clang by accident,
but breaks with the in-tree gcc version.
While here plug a whitespace nit.
Reported by: bde
Modified:
head/sys/i386/include/atomic.h
Modified: head/sys/i386/include/atomic.h
==============================================================================
--- head/sys/i386/include/atomic.h Thu Feb 2 01:21:55 2017
(r313079)
+++ head/sys/i386/include/atomic.h Thu Feb 2 01:33:08 2017
(r313080)
@@ -225,9 +225,9 @@ atomic_fcmpset_int(volatile u_int *dst,
" cmpxchgl %3,%1 ; "
" sete %0 ; "
"# atomic_cmpset_int"
- : "=r" (res), /* 0 */
+ : "=q" (res), /* 0 */
"+m" (*dst), /* 1 */
- "+a" (*expect) /* 2 */
+ "+a" (*expect) /* 2 */
: "r" (src) /* 3 */
: "memory", "cc");
return (res);
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