Commit 63e2c803 authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: Plug in SH-5 ffz()/__ffs() bitops. 



Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 079060c6

include/asm-sh/bitops.h

+26 −0
Original line number Diff line number Diff line
@@ -105,6 +105,7 @@ static inline int test_and_change_bit(int nr, volatile void * addr) 


#include <asm-generic/bitops/non-atomic.h>



#ifdef CONFIG_SUPERH32

static inline unsigned long ffz(unsigned long word)

{

	unsigned long result;
@@ -138,6 +139,31 @@ static inline unsigned long __ffs(unsigned long word) 
		: "t");

	return result;

}

#else

static inline unsigned long ffz(unsigned long word)

{

	unsigned long result, __d2, __d3;



        __asm__("gettr  tr0, %2\n\t"

                "pta    $+32, tr0\n\t"

                "andi   %1, 1, %3\n\t"

                "beq    %3, r63, tr0\n\t"

                "pta    $+4, tr0\n"

                "0:\n\t"

                "shlri.l        %1, 1, %1\n\t"

                "addi   %0, 1, %0\n\t"

                "andi   %1, 1, %3\n\t"

                "beqi   %3, 1, tr0\n"

                "1:\n\t"

                "ptabs  %2, tr0\n\t"

                : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3)

                : "0" (0L), "1" (word));



	return result;

}



#include <asm-generic/bitops/__ffs.h>

#endif



#include <asm-generic/bitops/find.h>

#include <asm-generic/bitops/ffs.h>