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 #define smp_mb__before_clear_bit() barrier() 27 #define smp_mb__after_clear_bit() barrier() 28 29 #include <asm-generic/bitops/ffz.h> 30 #include <asm-generic/bitops/__ffs.h> 31 #include <asm-generic/bitops/fls.h> 32 #include <asm-generic/bitops/__fls.h> 33 #include <asm-generic/bitops/fls64.h> 34 35 #ifdef __KERNEL__ 36 37 #include <asm-generic/bitops/sched.h> 38 #include <asm-generic/bitops/ffs.h> 39 40 /* 41 * hweightN: returns the hamming weight (i.e. the number 42 * of bits set) of a N-bit word 43 */ 44 45 #ifdef ULTRA_HAS_POPULATION_COUNT 46 47 static inline unsigned int __arch_hweight64(unsigned long w) 48 { 49 unsigned int res; 50 51 __asm__ ("popc %1,%0" : "=r" (res) : "r" (w)); 52 return res; 53 } 54 55 static inline unsigned int __arch_hweight32(unsigned int w) 56 { 57 unsigned int res; 58 59 __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff)); 60 return res; 61 } 62 63 static inline unsigned int __arch_hweight16(unsigned int w) 64 { 65 unsigned int res; 66 67 __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff)); 68 return res; 69 } 70 71 static inline unsigned int __arch_hweight8(unsigned int w) 72 { 73 unsigned int res; 74 75 __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff)); 76 return res; 77 } 78 79 #else 80 81 #include <asm-generic/bitops/arch_hweight.h> 82 83 #endif 84 #include <asm-generic/bitops/const_hweight.h> 85 #include <asm-generic/bitops/lock.h> 86 #endif /* __KERNEL__ */ 87 88 #include <asm-generic/bitops/find.h> 89 90 #ifdef __KERNEL__ 91 92 #include <asm-generic/bitops/ext2-non-atomic.h> 93 94 #define ext2_set_bit_atomic(lock,nr,addr) \ 95 test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr)) 96 #define ext2_clear_bit_atomic(lock,nr,addr) \ 97 test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr)) 98 99 #include <asm-generic/bitops/minix.h> 100 101 #endif /* __KERNEL__ */ 102 103 #endif /* defined(_SPARC64_BITOPS_H) */ 104