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/config.h>
  11 #include <linux/compiler.h>
  12 #include <asm/byteorder.h>
  13
  14 extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr);
  15 extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr);
  16 extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr);
  17 extern void set_bit(unsigned long nr, volatile unsigned long *addr);
  18 extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
  19 extern void change_bit(unsigned long nr, volatile unsigned long *addr);
  20
  21 #include <asm-generic/bitops/non-atomic.h>
  22
  23 #ifdef CONFIG_SMP
  24 #define smp_mb__before_clear_bit()      membar_storeload_loadload()
  25 #define smp_mb__after_clear_bit()       membar_storeload_storestore()
  26 #else
  27 #define smp_mb__before_clear_bit()      barrier()
  28 #define smp_mb__after_clear_bit()       barrier()
  29 #endif
  30
  31 #include <asm-generic/bitops/ffz.h>
  32 #include <asm-generic/bitops/__ffs.h>
  33 #include <asm-generic/bitops/fls.h>
  34 #include <asm-generic/bitops/fls64.h>
  35
  36 #ifdef __KERNEL__
  37
  38 #include <asm-generic/bitops/sched.h>
  39 #include <asm-generic/bitops/ffs.h>
  40
  41 /*
  42  * hweightN: returns the hamming weight (i.e. the number
  43  * of bits set) of a N-bit word
  44  */
  45
  46 #ifdef ULTRA_HAS_POPULATION_COUNT
  47
  48 static inline unsigned int hweight64(unsigned long w)
  49 {
  50         unsigned int res;
  51
  52         __asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
  53         return res;
  54 }
  55
  56 static inline unsigned int hweight32(unsigned int w)
  57 {
  58         unsigned int res;
  59
  60         __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff));
  61         return res;
  62 }
  63
  64 static inline unsigned int hweight16(unsigned int w)
  65 {
  66         unsigned int res;
  67
  68         __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff));
  69         return res;
  70 }
  71
  72 static inline unsigned int hweight8(unsigned int w)
  73 {
  74         unsigned int res;
  75
  76         __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff));
  77         return res;
  78 }
  79
  80 #else
  81
  82 #include <asm-generic/bitops/hweight.h>
  83
  84 #endif
  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) */