Messages in this thread Patch in this message | | | Date | Sat, 09 Feb 2008 13:02:00 +0100 | From | Martin Schwidefsky <> | Subject | [patch 03/11] Fix __ffs_word_loop/__ffz_word_loop inlnie assembly. |
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From: Martin Schwidefsky <schwidefsky@de.ibm.com>
The black art of inline assemblies.. The new __ffs_word_loop/ __ffz_word_loop inline assemblies need an early clobber for the two input/output variables.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> ---
include/asm-s390/bitops.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
Index: quilt-2.6/include/asm-s390/bitops.h =================================================================== --- quilt-2.6.orig/include/asm-s390/bitops.h +++ quilt-2.6/include/asm-s390/bitops.h @@ -472,7 +472,7 @@ static inline unsigned long __ffz_word_l " brct %1,0b\n" "1:\n" #endif - : "+a" (bytes), "+d" (size) + : "+&a" (bytes), "+&d" (size) : "d" (-1UL), "a" (addr), "m" (*(addrtype *) addr) : "cc" ); return bytes; @@ -507,7 +507,7 @@ static inline unsigned long __ffs_word_l " brct %1,0b\n" "1:\n" #endif - : "+a" (bytes), "+a" (size) + : "+&a" (bytes), "+&a" (size) : "d" (0UL), "a" (addr), "m" (*(addrtype *) addr) : "cc" ); return bytes; -- blue skies, Martin.
"Reality continues to ruin my life." - Calvin.
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