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 #include <asm/system.h> 11 /* For __swab32 */ 12 #include <asm/byteorder.h> 13 14 #ifdef CONFIG_GUSA_RB 15 #include <asm/bitops-grb.h> 16 #elif defined(CONFIG_CPU_SH2A) 17 #include <asm-generic/bitops/atomic.h> 18 #include <asm/bitops-op32.h> 19 #elif defined(CONFIG_CPU_SH4A) 20 #include <asm/bitops-llsc.h> 21 #else 22 #include <asm-generic/bitops/atomic.h> 23 #include <asm-generic/bitops/non-atomic.h> 24 #endif 25 26 /* 27 * clear_bit() doesn't provide any barrier for the compiler. 28 */ 29 #define smp_mb__before_clear_bit() smp_mb() 30 #define smp_mb__after_clear_bit() smp_mb() 31 32 #ifdef CONFIG_SUPERH32 33 static inline unsigned long ffz(unsigned long word) 34 { 35 unsigned long result; 36 37 __asm__("1:\n\t" 38 "shlr %1\n\t" 39 "bt/s 1b\n\t" 40 " add #1, %0" 41 : "=r" (result), "=r" (word) 42 : "0" (~0L), "1" (word) 43 : "t"); 44 return result; 45 } 46 47 /** 48 * __ffs - find first bit in word. 49 * @word: The word to search 50 * 51 * Undefined if no bit exists, so code should check against 0 first. 52 */ 53 static inline unsigned long __ffs(unsigned long word) 54 { 55 unsigned long result; 56 57 __asm__("1:\n\t" 58 "shlr %1\n\t" 59 "bf/s 1b\n\t" 60 " add #1, %0" 61 : "=r" (result), "=r" (word) 62 : "0" (~0L), "1" (word) 63 : "t"); 64 return result; 65 } 66 #else 67 static inline unsigned long ffz(unsigned long word) 68 { 69 unsigned long result, __d2, __d3; 70 71 __asm__("gettr tr0, %2\n\t" 72 "pta $+32, tr0\n\t" 73 "andi %1, 1, %3\n\t" 74 "beq %3, r63, tr0\n\t" 75 "pta $+4, tr0\n" 76 "0:\n\t" 77 "shlri.l %1, 1, %1\n\t" 78 "addi %0, 1, %0\n\t" 79 "andi %1, 1, %3\n\t" 80 "beqi %3, 1, tr0\n" 81 "1:\n\t" 82 "ptabs %2, tr0\n\t" 83 : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3) 84 : "0" (0L), "1" (word)); 85 86 return result; 87 } 88 89 #include <asm-generic/bitops/__ffs.h> 90 #endif 91 92 #include <asm-generic/bitops/find.h> 93 #include <asm-generic/bitops/ffs.h> 94 #include <asm-generic/bitops/hweight.h> 95 #include <asm-generic/bitops/lock.h> 96 #include <asm-generic/bitops/sched.h> 97 #include <asm-generic/bitops/ext2-non-atomic.h> 98 #include <asm-generic/bitops/ext2-atomic.h> 99 #include <asm-generic/bitops/minix.h> 100 #include <asm-generic/bitops/fls.h> 101 #include <asm-generic/bitops/__fls.h> 102 #include <asm-generic/bitops/fls64.h> 103 104 #endif /* __KERNEL__ */ 105 106 #endif /* __ASM_SH_BITOPS_H */ 107