| | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| | 2 | #ifndef __ASM_SH_BITOPS_H |
| | 3 | #define __ASM_SH_BITOPS_H |
| | 4 | |
| | 5 | #ifndef _LINUX_BITOPS_H |
| | 6 | #error only <linux/bitops.h> can be included directly |
| | 7 | #endif |
| | 8 | |
| | 9 | /* For __swab32 */ |
| | 10 | #include <asm/byteorder.h> |
| | 11 | #include <asm/barrier.h> |
| | 12 | |
| | 13 | #ifdef CONFIG_GUSA_RB |
| | 14 | #include <asm/bitops-grb.h> |
| | 15 | #elif defined(CONFIG_CPU_SH2A) |
| | 16 | #include <asm-generic/bitops/atomic.h> |
| | 17 | #include <asm/bitops-op32.h> |
| | 18 | #elif defined(CONFIG_CPU_SH4A) |
| | 19 | #include <asm/bitops-llsc.h> |
| | 20 | #elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP) |
| | 21 | #include <asm/bitops-cas.h> |
| | 22 | #else |
| | 23 | #include <asm-generic/bitops/atomic.h> |
| | 24 | #include <asm-generic/bitops/non-atomic.h> |
| | 25 | #endif |
| | 26 | |
| | 27 | static inline unsigned long ffz(unsigned long word) |
| | 28 | { |
| | 29 | unsigned long result; |
| | 30 | |
| | 31 | __asm__("1:\n\t" |
| | 32 | "shlr %1\n\t" |
| | 33 | "bt/s 1b\n\t" |
| | 34 | " add #1, %0" |
| | 35 | : "=r" (result), "=r" (word) |
| | 36 | : "0" (~0L), "1" (word) |
| | 37 | : "t"); |
| | 38 | return result; |
| | 39 | } |
| | 40 | |
| | 41 | /** |
| | 42 | * __ffs - find first bit in word. |
| | 43 | * @word: The word to search |
| | 44 | * |
| | 45 | * Undefined if no bit exists, so code should check against 0 first. |
| | 46 | */ |
| | 47 | static inline unsigned long __ffs(unsigned long word) |
| | 48 | { |
| | 49 | unsigned long result; |
| | 50 | |
| | 51 | __asm__("1:\n\t" |
| | 52 | "shlr %1\n\t" |
| | 53 | "bf/s 1b\n\t" |
| | 54 | " add #1, %0" |
| | 55 | : "=r" (result), "=r" (word) |
| | 56 | : "0" (~0L), "1" (word) |
| | 57 | : "t"); |
| | 58 | return result; |
| | 59 | } |
| | 60 | |
| | 61 | #include <asm-generic/bitops/ffs.h> |
| | 62 | #include <asm-generic/bitops/hweight.h> |
| | 63 | #include <asm-generic/bitops/lock.h> |
| | 64 | #include <asm-generic/bitops/sched.h> |
| | 65 | #include <asm-generic/bitops/ext2-atomic.h> |
| | 66 | #include <asm-generic/bitops/fls.h> |
| | 67 | #include <asm-generic/bitops/__fls.h> |
| | 68 | #include <asm-generic/bitops/fls64.h> |
| | 69 | |
| | 70 | #include <asm-generic/bitops/le.h> |
| | 71 | |
| | 72 | #endif /* __ASM_SH_BITOPS_H */ |
projects / linux-2.6-block.git / blame_incremental