include/asm-sparc64/bitops.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 #ifdef CONFIG_SMP
  27 #define smp_mb__before_clear_bit()      membar_storeload_loadload()
  28 #define smp_mb__after_clear_bit()       membar_storeload_storestore()
  29 #else
  30 #define smp_mb__before_clear_bit()      barrier()
  31 #define smp_mb__after_clear_bit()       barrier()
  32 #endif
  33
  34 #include <asm-generic/bitops/ffz.h>
  35 #include <asm-generic/bitops/__ffs.h>
  36 #include <asm-generic/bitops/fls.h>
  37 #include <asm-generic/bitops/__fls.h>
  38 #include <asm-generic/bitops/fls64.h>
  39
  40 #ifdef __KERNEL__
  41
  42 #include <asm-generic/bitops/sched.h>
  43 #include <asm-generic/bitops/ffs.h>
  44
  45 /*
  46  * hweightN: returns the hamming weight (i.e. the number
  47  * of bits set) of a N-bit word
  48  */
  49
  50 #ifdef ULTRA_HAS_POPULATION_COUNT
  51
  52 static inline unsigned int hweight64(unsigned long w)
  53 {
  54         unsigned int res;
  55
  56         __asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
  57         return res;
  58 }
  59
  60 static inline unsigned int hweight32(unsigned int w)
  61 {
  62         unsigned int res;
  63
  64         __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff));
  65         return res;
  66 }
  67
  68 static inline unsigned int hweight16(unsigned int w)
  69 {
  70         unsigned int res;
  71
  72         __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff));
  73         return res;
  74 }
  75
  76 static inline unsigned int hweight8(unsigned int w)
  77 {
  78         unsigned int res;
  79
  80         __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff));
  81         return res;
  82 }
  83
  84 #else
  85
  86 #include <asm-generic/bitops/hweight.h>
  87
  88 #endif
  89 #include <asm-generic/bitops/lock.h>
  90 #endif /* __KERNEL__ */
  91
  92 #include <asm-generic/bitops/find.h>
  93
  94 #ifdef __KERNEL__
  95
  96 #include <asm-generic/bitops/ext2-non-atomic.h>
  97
  98 #define ext2_set_bit_atomic(lock,nr,addr) \
  99         test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
 100 #define ext2_clear_bit_atomic(lock,nr,addr) \
 101         test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
 102
 103 #include <asm-generic/bitops/minix.h>
 104
 105 #endif /* __KERNEL__ */
 106
 107 #endif /* defined(_SPARC64_BITOPS_H) */