/* $Id: bitops.h,v 1.39 2002/01/30 01:40:00 davem Exp $ * bitops.h: Bit string operations on the V9. * * Copyright 1996, 1997 David S. Miller (davem@caip.rutgers.edu) */ #ifndef _SPARC64_BITOPS_H #define _SPARC64_BITOPS_H #include <linux/compiler.h> #include <asm/byteorder.h> extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr); extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr); extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr); extern void set_bit(unsigned long nr, volatile unsigned long *addr); extern void clear_bit(unsigned long nr, volatile unsigned long *addr); extern void change_bit(unsigned long nr, volatile unsigned long *addr); #include <asm-generic/bitops/non-atomic.h> #ifdef CONFIG_SMP #define smp_mb__before_clear_bit() membar_storeload_loadload() #define smp_mb__after_clear_bit() membar_storeload_storestore() #else #define smp_mb__before_clear_bit() barrier() #define smp_mb__after_clear_bit() barrier() #endif #include <asm-generic/bitops/ffz.h> #include <asm-generic/bitops/__ffs.h> #include <asm-generic/bitops/fls.h> #include <asm-generic/bitops/fls64.h> #ifdef __KERNEL__ #include <asm-generic/bitops/sched.h> #include <asm-generic/bitops/ffs.h> /* * hweightN: returns the hamming weight (i.e. the number * of bits set) of a N-bit word */ #ifdef ULTRA_HAS_POPULATION_COUNT static inline unsigned int hweight64(unsigned long w) { unsigned int res; __asm__ ("popc %1,%0" : "=r" (res) : "r" (w)); return res; } static inline unsigned int hweight32(unsigned int w) { unsigned int res; __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff)); return res; } static inline unsigned int hweight16(unsigned int w) { unsigned int res; __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff)); return res; } static inline unsigned int hweight8(unsigned int w) { unsigned int res; __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff)); return res; } #else #include <asm-generic/bitops/hweight.h> #endif #endif /* __KERNEL__ */ #include <asm-generic/bitops/find.h> #ifdef __KERNEL__ #include <asm-generic/bitops/ext2-non-atomic.h> #define ext2_set_bit_atomic(lock,nr,addr) \ test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr)) #define ext2_clear_bit_atomic(lock,nr,addr) \ test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr)) #include <asm-generic/bitops/minix.h> #endif /* __KERNEL__ */ #endif /* defined(_SPARC64_BITOPS_H) */