root/arch/sparc/include/asm/bitops_32.h

INCLUDED FROM

DEFINITIONS

1. test_and_set_bit
2. set_bit
3. test_and_clear_bit
4. clear_bit
5. test_and_change_bit
6. change_bit

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * bitops.h: Bit string operations on the Sparc.
   4  *
   5  * Copyright 1995 David S. Miller (davem@caip.rutgers.edu)
   6  * Copyright 1996 Eddie C. Dost   (ecd@skynet.be)
   7  * Copyright 2001 Anton Blanchard (anton@samba.org)
   8  */
   9 
  10 #ifndef _SPARC_BITOPS_H
  11 #define _SPARC_BITOPS_H
  12 
  13 #include <linux/compiler.h>
  14 #include <asm/byteorder.h>
  15 
  16 #ifdef __KERNEL__
  17 
  18 #ifndef _LINUX_BITOPS_H
  19 #error only <linux/bitops.h> can be included directly
  20 #endif
  21 
  22 unsigned long ___set_bit(unsigned long *addr, unsigned long mask);
  23 unsigned long ___clear_bit(unsigned long *addr, unsigned long mask);
  24 unsigned long ___change_bit(unsigned long *addr, unsigned long mask);
  25 
  26 /*
  27  * Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0'
  28  * is in the highest of the four bytes and bit '31' is the high bit
  29  * within the first byte. Sparc is BIG-Endian. Unless noted otherwise
  30  * all bit-ops return 0 if bit was previously clear and != 0 otherwise.
  31  */
  32 static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
  33 {
  34         unsigned long *ADDR, mask;
  35 
  36         ADDR = ((unsigned long *) addr) + (nr >> 5);
  37         mask = 1 << (nr & 31);
  38 
  39         return ___set_bit(ADDR, mask) != 0;
  40 }
  41 
  42 static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
  43 {
  44         unsigned long *ADDR, mask;
  45 
  46         ADDR = ((unsigned long *) addr) + (nr >> 5);
  47         mask = 1 << (nr & 31);
  48 
  49         (void) ___set_bit(ADDR, mask);
  50 }
  51 
  52 static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
  53 {
  54         unsigned long *ADDR, mask;
  55 
  56         ADDR = ((unsigned long *) addr) + (nr >> 5);
  57         mask = 1 << (nr & 31);
  58 
  59         return ___clear_bit(ADDR, mask) != 0;
  60 }
  61 
  62 static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
  63 {
  64         unsigned long *ADDR, mask;
  65 
  66         ADDR = ((unsigned long *) addr) + (nr >> 5);
  67         mask = 1 << (nr & 31);
  68 
  69         (void) ___clear_bit(ADDR, mask);
  70 }
  71 
  72 static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
  73 {
  74         unsigned long *ADDR, mask;
  75 
  76         ADDR = ((unsigned long *) addr) + (nr >> 5);
  77         mask = 1 << (nr & 31);
  78 
  79         return ___change_bit(ADDR, mask) != 0;
  80 }
  81 
  82 static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
  83 {
  84         unsigned long *ADDR, mask;
  85 
  86         ADDR = ((unsigned long *) addr) + (nr >> 5);
  87         mask = 1 << (nr & 31);
  88 
  89         (void) ___change_bit(ADDR, mask);
  90 }
  91 
  92 #include <asm-generic/bitops/non-atomic.h>
  93 
  94 #include <asm-generic/bitops/ffz.h>
  95 #include <asm-generic/bitops/__ffs.h>
  96 #include <asm-generic/bitops/sched.h>
  97 #include <asm-generic/bitops/ffs.h>
  98 #include <asm-generic/bitops/fls.h>
  99 #include <asm-generic/bitops/__fls.h>
 100 #include <asm-generic/bitops/fls64.h>
 101 #include <asm-generic/bitops/hweight.h>
 102 #include <asm-generic/bitops/lock.h>
 103 #include <asm-generic/bitops/find.h>
 104 #include <asm-generic/bitops/le.h>
 105 #include <asm-generic/bitops/ext2-atomic.h>
 106 
 107 #endif /* __KERNEL__ */
 108 
 109 #endif /* defined(_SPARC_BITOPS_H) */