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) */ 108