generic one.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
return (*(volatile u32 *)reg);
}
-/* These next three functions should be a generic part of the MIPS
- * kernel (with the 'au_' removed from the name) and selected for
- * processors that support the instructions.
- * Taken from PPC tree. -- Dan
- */
-/* Return the bit position of the most significant 1 bit in a word */
-static __inline__ int __ilog2(unsigned int x)
-{
- int lz;
-
- asm volatile (
- ".set\tnoreorder\n\t"
- ".set\tnoat\n\t"
- ".set\tmips32\n\t"
- "clz\t%0,%1\n\t"
- ".set\tmips0\n\t"
- ".set\tat\n\t"
- ".set\treorder"
- : "=r" (lz)
- : "r" (x));
-
- return 31 - lz;
-}
static __inline__ int au_ffz(unsigned int x)
{