arch/sparc/include/asm/bitops_64.h

   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 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 #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) */