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 #include <asm/barrier.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 #elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP) 22 #include <asm/bitops-cas.h> 23 #else 24 #include <asm-generic/bitops/atomic.h> 25 #include <asm-generic/bitops/non-atomic.h> 26 #endif 27 28 #ifdef CONFIG_SUPERH32 29 static inline unsigned long ffz(unsigned long word) 30 { 31 unsigned long result; 32 33 __asm__("1:\n\t" 34 "shlr %1\n\t" 35 "bt/s 1b\n\t" 36 " add #1, %0" 37 : "=r" (result), "=r" (word) 38 : "0" (~0L), "1" (word) 39 : "t"); 40 return result; 41 } 42 43 /** 44 * __ffs - find first bit in word. 45 * @word: The word to search 46 * 47 * Undefined if no bit exists, so code should check against 0 first. 48 */ 49 static inline unsigned long __ffs(unsigned long word) 50 { 51 unsigned long result; 52 53 __asm__("1:\n\t" 54 "shlr %1\n\t" 55 "bf/s 1b\n\t" 56 " add #1, %0" 57 : "=r" (result), "=r" (word) 58 : "0" (~0L), "1" (word) 59 : "t"); 60 return result; 61 } 62 #else 63 static inline unsigned long ffz(unsigned long word) 64 { 65 unsigned long result, __d2, __d3; 66 67 __asm__("gettr tr0, %2\n\t" 68 "pta $+32, tr0\n\t" 69 "andi %1, 1, %3\n\t" 70 "beq %3, r63, tr0\n\t" 71 "pta $+4, tr0\n" 72 "0:\n\t" 73 "shlri.l %1, 1, %1\n\t" 74 "addi %0, 1, %0\n\t" 75 "andi %1, 1, %3\n\t" 76 "beqi %3, 1, tr0\n" 77 "1:\n\t" 78 "ptabs %2, tr0\n\t" 79 : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3) 80 : "0" (0L), "1" (word)); 81 82 return result; 83 } 84 85 #include <asm-generic/bitops/__ffs.h> 86 #endif 87 88 #include <asm-generic/bitops/find.h> 89 #include <asm-generic/bitops/ffs.h> 90 #include <asm-generic/bitops/hweight.h> 91 #include <asm-generic/bitops/lock.h> 92 #include <asm-generic/bitops/sched.h> 93 #include <asm-generic/bitops/le.h> 94 #include <asm-generic/bitops/ext2-atomic.h> 95 #include <asm-generic/bitops/fls.h> 96 #include <asm-generic/bitops/__fls.h> 97 #include <asm-generic/bitops/fls64.h> 98 99 #endif /* __KERNEL__ */ 100 101 #endif /* __ASM_SH_BITOPS_H */ 102