include/asm-sparc64/bitops.h

   1 /* $Id: bitops.h,v 1.39 2002/01/30 01:40:00 davem Exp $
   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 #include <linux/compiler.h>
  11 #include <asm/byteorder.h>
  12
  13 extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr);
  14 extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr);
  15 extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr);
  16 extern void set_bit(unsigned long nr, volatile unsigned long *addr);
  17 extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
  18 extern void change_bit(unsigned long nr, volatile unsigned long *addr);
  19
  20 #include <asm-generic/bitops/non-atomic.h>
  21
  22 #ifdef CONFIG_SMP
  23 #define smp_mb__before_clear_bit()      membar_storeload_loadload()
  24 #define smp_mb__after_clear_bit()       membar_storeload_storestore()
  25 #else
  26 #define smp_mb__before_clear_bit()      barrier()
  27 #define smp_mb__after_clear_bit()       barrier()
  28 #endif
  29
  30 #include <asm-generic/bitops/ffz.h>
  31 #include <asm-generic/bitops/__ffs.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 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 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 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 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 #endif /* __KERNEL__ */
  85
  86 #include <asm-generic/bitops/find.h>
  87
  88 #ifdef __KERNEL__
  89
  90 #include <asm-generic/bitops/ext2-non-atomic.h>
  91
  92 #define ext2_set_bit_atomic(lock,nr,addr) \
  93         test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
  94 #define ext2_clear_bit_atomic(lock,nr,addr) \
  95         test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
  96
  97 #include <asm-generic/bitops/minix.h>
  98
  99 #endif /* __KERNEL__ */
 100
 101 #endif /* defined(_SPARC64_BITOPS_H) */