LXR linux/arch/sparc/include/asm/bitops

   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
  22unsigned long ___set_bit(unsigned long *addr, unsigned long mask);
  23unsigned long ___clear_bit(unsigned long *addr, unsigned long mask);
  24unsigned 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 */
  32static 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
  42static 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
  52static 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
  62static 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
  72static 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
  82static 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) */
 110