arch/openrisc/include/asm/bitops/fls.h

   1 /*
   2  * OpenRISC Linux
   3  *
   4  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #ifndef __ASM_OPENRISC_FLS_H
  10 #define __ASM_OPENRISC_FLS_H
  11
  12 static inline int fls(int x)
  13 {
  14         int ret;
  15
  16         __asm__ ("l.fl1 %0,%1"
  17                  : "=r" (ret)
  18                  : "r" (x));
  19
  20         return ret;
  21 }
  22
  23 #endif /* __ASM_OPENRISC_FLS_H */