Module: xenomai-3
Branch: next
Commit: ba784cbc5e8b74025d4288256f07c997b14f1c40
URL:
http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=ba784cbc5e8b74025d4288256f07c997b14f1c40
Author: Dmitriy Cherkasov <dmit...@mperpetuo.com>
Date: Mon Jun 15 17:10:37 2015 -0700
cobalt/arm64: machine.h: Add 64-bit ffnz implementation. This fixes crash when
running xddp-echo.
---
kernel/cobalt/arch/arm64/include/asm/xenomai/machine.h | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/kernel/cobalt/arch/arm64/include/asm/xenomai/machine.h
b/kernel/cobalt/arch/arm64/include/asm/xenomai/machine.h
index e078564..417a7b0 100644
--- a/kernel/cobalt/arch/arm64/include/asm/xenomai/machine.h
+++ b/kernel/cobalt/arch/arm64/include/asm/xenomai/machine.h
@@ -43,9 +43,7 @@
static inline __attribute_const__ unsigned long ffnz(unsigned long ul)
{
- int __r;
- __asm__("clz\t%0, %1" : "=r" (__r) : "r"(ul & (-ul)) : "cc");
- return 31 - __r;
+ return __builtin_ffsl(ul) - 1;
}
#include <asm-generic/xenomai/machine.h>
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