| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __ASM_SH_BITOPS_H |
| #define __ASM_SH_BITOPS_H |
| |
| #ifdef __KERNEL__ |
| |
| #ifndef _LINUX_BITOPS_H |
| #error only <linux/bitops.h> can be included directly |
| #endif |
| |
| /* For __swab32 */ |
| #include <asm/byteorder.h> |
| #include <asm/barrier.h> |
| |
| #ifdef CONFIG_GUSA_RB |
| #include <asm/bitops-grb.h> |
| #elif defined(CONFIG_CPU_SH2A) |
| #include <asm-generic/bitops/atomic.h> |
| #include <asm/bitops-op32.h> |
| #elif defined(CONFIG_CPU_SH4A) |
| #include <asm/bitops-llsc.h> |
| #elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP) |
| #include <asm/bitops-cas.h> |
| #else |
| #include <asm-generic/bitops/atomic.h> |
| #include <asm-generic/bitops/non-atomic.h> |
| #endif |
| |
| static inline unsigned long ffz(unsigned long word) |
| { |
| unsigned long result; |
| |
| __asm__("1:\n\t" |
| "shlr %1\n\t" |
| "bt/s 1b\n\t" |
| " add #1, %0" |
| : "=r" (result), "=r" (word) |
| : "0" (~0L), "1" (word) |
| : "t"); |
| return result; |
| } |
| |
| /** |
| * __ffs - find first bit in word. |
| * @word: The word to search |
| * |
| * Undefined if no bit exists, so code should check against 0 first. |
| */ |
| static inline unsigned long __ffs(unsigned long word) |
| { |
| unsigned long result; |
| |
| __asm__("1:\n\t" |
| "shlr %1\n\t" |
| "bf/s 1b\n\t" |
| " add #1, %0" |
| : "=r" (result), "=r" (word) |
| : "0" (~0L), "1" (word) |
| : "t"); |
| return result; |
| } |
| |
| #include <asm-generic/bitops/find.h> |
| #include <asm-generic/bitops/ffs.h> |
| #include <asm-generic/bitops/hweight.h> |
| #include <asm-generic/bitops/lock.h> |
| #include <asm-generic/bitops/sched.h> |
| #include <asm-generic/bitops/le.h> |
| #include <asm-generic/bitops/ext2-atomic.h> |
| #include <asm-generic/bitops/fls.h> |
| #include <asm-generic/bitops/__fls.h> |
| #include <asm-generic/bitops/fls64.h> |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* __ASM_SH_BITOPS_H */ |
