LXR linux/arch/sparc/include/asm/bitops

   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
  17extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr);
  18extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr);
  19extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr);
  20extern void set_bit(unsigned long nr, volatile unsigned long *addr);
  21extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
  22extern 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
  47static inline unsigned int hweight64(unsigned long w)
  48{
  49        unsigned int res;
  50
  51        __asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
  52        return res;
  53}
  54
  55static inline unsigned int 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
  63static inline unsigned int 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
  71static inline unsigned int 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/hweight.h>
  82
  83#endif
  84#include <asm-generic/bitops/lock.h>
  85#endif /* __KERNEL__ */
  86
  87#include <asm-generic/bitops/find.h>
  88
  89#ifdef __KERNEL__
  90
  91#include <asm-generic/bitops/ext2-non-atomic.h>
  92
  93#define ext2_set_bit_atomic(lock,nr,addr) \
  94        test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
  95#define ext2_clear_bit_atomic(lock,nr,addr) \
  96        test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
  97
  98#include <asm-generic/bitops/minix.h>
  99
 100#endif /* __KERNEL__ */
 101
 102#endif /* defined(_SPARC64_BITOPS_H) */
 103