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 #else 22 #include <asm-generic/bitops/atomic.h> 23 #include <asm-generic/bitops/non-atomic.h> 24 #endif 25 26 #ifdef CONFIG_SUPERH32 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 #else 61 static inline unsigned long ffz(unsigned long word) 62 { 63 unsigned long result, __d2, __d3; 64 65 __asm__("gettr tr0, %2\n\t" 66 "pta $+32, tr0\n\t" 67 "andi %1, 1, %3\n\t" 68 "beq %3, r63, tr0\n\t" 69 "pta $+4, tr0\n" 70 "0:\n\t" 71 "shlri.l %1, 1, %1\n\t" 72 "addi %0, 1, %0\n\t" 73 "andi %1, 1, %3\n\t" 74 "beqi %3, 1, tr0\n" 75 "1:\n\t" 76 "ptabs %2, tr0\n\t" 77 : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3) 78 : "0" (0L), "1" (word)); 79 80 return result; 81 } 82 83 #include <asm-generic/bitops/__ffs.h> 84 #endif 85 86 #include <asm-generic/bitops/find.h> 87 #include <asm-generic/bitops/ffs.h> 88 #include <asm-generic/bitops/hweight.h> 89 #include <asm-generic/bitops/lock.h> 90 #include <asm-generic/bitops/sched.h> 91 #include <asm-generic/bitops/le.h> 92 #include <asm-generic/bitops/ext2-atomic.h> 93 #include <asm-generic/bitops/fls.h> 94 #include <asm-generic/bitops/__fls.h> 95 #include <asm-generic/bitops/fls64.h> 96 97 #endif /* __KERNEL__ */ 98 99 #endif /* __ASM_SH_BITOPS_H */ 100