1 #ifndef __ASM_SH_BITOPS_H 2 #define __ASM_SH_BITOPS_H 3 4 #ifdef __KERNEL__ 5 6 #ifndef _LINUX_BITOPS_H 7 #error only <linux/bitops.h> can be included directly 8 #endif 9 10 /* For __swab32 */ 11 #include <asm/byteorder.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 #else 21 #include <asm-generic/bitops/atomic.h> 22 #include <asm-generic/bitops/non-atomic.h> 23 #endif 24 25 /* 26 * clear_bit() doesn't provide any barrier for the compiler. 27 */ 28 #define smp_mb__before_clear_bit() smp_mb() 29 #define smp_mb__after_clear_bit() smp_mb() 30 31 #ifdef CONFIG_SUPERH32 32 static inline unsigned long ffz(unsigned long word) 33 { 34 unsigned long result; 35 36 __asm__("1:\n\t" 37 "shlr %1\n\t" 38 "bt/s 1b\n\t" 39 " add #1, %0" 40 : "=r" (result), "=r" (word) 41 : "0" (~0L), "1" (word) 42 : "t"); 43 return result; 44 } 45 46 /** 47 * __ffs - find first bit in word. 48 * @word: The word to search 49 * 50 * Undefined if no bit exists, so code should check against 0 first. 51 */ 52 static inline unsigned long __ffs(unsigned long word) 53 { 54 unsigned long result; 55 56 __asm__("1:\n\t" 57 "shlr %1\n\t" 58 "bf/s 1b\n\t" 59 " add #1, %0" 60 : "=r" (result), "=r" (word) 61 : "0" (~0L), "1" (word) 62 : "t"); 63 return result; 64 } 65 #else 66 static inline unsigned long ffz(unsigned long word) 67 { 68 unsigned long result, __d2, __d3; 69 70 __asm__("gettr tr0, %2\n\t" 71 "pta $+32, tr0\n\t" 72 "andi %1, 1, %3\n\t" 73 "beq %3, r63, tr0\n\t" 74 "pta $+4, tr0\n" 75 "0:\n\t" 76 "shlri.l %1, 1, %1\n\t" 77 "addi %0, 1, %0\n\t" 78 "andi %1, 1, %3\n\t" 79 "beqi %3, 1, tr0\n" 80 "1:\n\t" 81 "ptabs %2, tr0\n\t" 82 : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3) 83 : "0" (0L), "1" (word)); 84 85 return result; 86 } 87 88 #include <asm-generic/bitops/__ffs.h> 89 #endif 90 91 #include <asm-generic/bitops/find.h> 92 #include <asm-generic/bitops/ffs.h> 93 #include <asm-generic/bitops/hweight.h> 94 #include <asm-generic/bitops/lock.h> 95 #include <asm-generic/bitops/sched.h> 96 #include <asm-generic/bitops/le.h> 97 #include <asm-generic/bitops/ext2-atomic.h> 98 #include <asm-generic/bitops/fls.h> 99 #include <asm-generic/bitops/__fls.h> 100 #include <asm-generic/bitops/fls64.h> 101 102 #endif /* __KERNEL__ */ 103 104 #endif /* __ASM_SH_BITOPS_H */ 105