| Sam Ravnborg | f5e706a | 2008-07-17 21:55:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | * bitops.h: Bit string operations on the V9. |
| 3 | * |
| 4 | * Copyright 1996, 1997 David S. Miller (davem@caip.rutgers.edu) |
| 5 | */ |
| 6 | |
| 7 | #ifndef _SPARC64_BITOPS_H |
| 8 | #define _SPARC64_BITOPS_H |
| 9 | |
| 10 | #ifndef _LINUX_BITOPS_H |
| 11 | #error only <linux/bitops.h> can be included directly |
| 12 | #endif |
| 13 | |
| 14 | #include <linux/compiler.h> |
| 15 | #include <asm/byteorder.h> |
| 16 | |
| 17 | extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr); |
| 18 | extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr); |
| 19 | extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr); |
| 20 | extern void set_bit(unsigned long nr, volatile unsigned long *addr); |
| 21 | extern void clear_bit(unsigned long nr, volatile unsigned long *addr); |
| 22 | extern void change_bit(unsigned long nr, volatile unsigned long *addr); |
| 23 | |
| 24 | #include <asm-generic/bitops/non-atomic.h> |
| 25 | |
| 26 | #ifdef CONFIG_SMP |
| 27 | #define smp_mb__before_clear_bit() membar_storeload_loadload() |
| 28 | #define smp_mb__after_clear_bit() membar_storeload_storestore() |
| 29 | #else |
| 30 | #define smp_mb__before_clear_bit() barrier() |
| 31 | #define smp_mb__after_clear_bit() barrier() |
| 32 | #endif |
| 33 | |
| 34 | #include <asm-generic/bitops/ffz.h> |
| 35 | #include <asm-generic/bitops/__ffs.h> |
| 36 | #include <asm-generic/bitops/fls.h> |
| 37 | #include <asm-generic/bitops/__fls.h> |
| 38 | #include <asm-generic/bitops/fls64.h> |
| 39 | |
| 40 | #ifdef __KERNEL__ |
| 41 | |
| 42 | #include <asm-generic/bitops/sched.h> |
| 43 | #include <asm-generic/bitops/ffs.h> |
| 44 | |
| 45 | /* |
| 46 | * hweightN: returns the hamming weight (i.e. the number |
| 47 | * of bits set) of a N-bit word |
| 48 | */ |
| 49 | |
| 50 | #ifdef ULTRA_HAS_POPULATION_COUNT |
| 51 | |
| 52 | static inline unsigned int hweight64(unsigned long w) |
| 53 | { |
| 54 | unsigned int res; |
| 55 | |
| 56 | __asm__ ("popc %1,%0" : "=r" (res) : "r" (w)); |
| 57 | return res; |
| 58 | } |
| 59 | |
| 60 | static inline unsigned int hweight32(unsigned int w) |
| 61 | { |
| 62 | unsigned int res; |
| 63 | |
| 64 | __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff)); |
| 65 | return res; |
| 66 | } |
| 67 | |
| 68 | static inline unsigned int hweight16(unsigned int w) |
| 69 | { |
| 70 | unsigned int res; |
| 71 | |
| 72 | __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff)); |
| 73 | return res; |
| 74 | } |
| 75 | |
| 76 | static inline unsigned int hweight8(unsigned int w) |
| 77 | { |
| 78 | unsigned int res; |
| 79 | |
| 80 | __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff)); |
| 81 | return res; |
| 82 | } |
| 83 | |
| 84 | #else |
| 85 | |
| 86 | #include <asm-generic/bitops/hweight.h> |
| 87 | |
| 88 | #endif |
| 89 | #include <asm-generic/bitops/lock.h> |
| 90 | #endif /* __KERNEL__ */ |
| 91 | |
| 92 | #include <asm-generic/bitops/find.h> |
| 93 | |
| 94 | #ifdef __KERNEL__ |
| 95 | |
| 96 | #include <asm-generic/bitops/ext2-non-atomic.h> |
| 97 | |
| 98 | #define ext2_set_bit_atomic(lock,nr,addr) \ |
| 99 | test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr)) |
| 100 | #define ext2_clear_bit_atomic(lock,nr,addr) \ |
| 101 | test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr)) |
| 102 | |
| 103 | #include <asm-generic/bitops/minix.h> |
| 104 | |
| 105 | #endif /* __KERNEL__ */ |
| 106 | |
| 107 | #endif /* defined(_SPARC64_BITOPS_H) */ |