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109 lines
2.8 KiB
109 lines
2.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* bitops.h: Bit string operations on the Sparc. |
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* |
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* Copyright 1995 David S. Miller ([email protected]) |
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* Copyright 1996 Eddie C. Dost ([email protected]) |
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* Copyright 2001 Anton Blanchard ([email protected]) |
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*/ |
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#ifndef _SPARC_BITOPS_H |
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#define _SPARC_BITOPS_H |
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#include <linux/compiler.h> |
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#include <asm/byteorder.h> |
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#ifdef __KERNEL__ |
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#ifndef _LINUX_BITOPS_H |
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#error only <linux/bitops.h> can be included directly |
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#endif |
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unsigned long ___set_bit(unsigned long *addr, unsigned long mask); |
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unsigned long ___clear_bit(unsigned long *addr, unsigned long mask); |
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unsigned long ___change_bit(unsigned long *addr, unsigned long mask); |
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/* |
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* Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0' |
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* is in the highest of the four bytes and bit '31' is the high bit |
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* within the first byte. Sparc is BIG-Endian. Unless noted otherwise |
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* all bit-ops return 0 if bit was previously clear and != 0 otherwise. |
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*/ |
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static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *addr) |
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{ |
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unsigned long *ADDR, mask; |
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ADDR = ((unsigned long *) addr) + (nr >> 5); |
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mask = 1 << (nr & 31); |
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return ___set_bit(ADDR, mask) != 0; |
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} |
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static inline void set_bit(unsigned long nr, volatile unsigned long *addr) |
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{ |
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unsigned long *ADDR, mask; |
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ADDR = ((unsigned long *) addr) + (nr >> 5); |
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mask = 1 << (nr & 31); |
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(void) ___set_bit(ADDR, mask); |
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} |
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static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr) |
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{ |
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unsigned long *ADDR, mask; |
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ADDR = ((unsigned long *) addr) + (nr >> 5); |
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mask = 1 << (nr & 31); |
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return ___clear_bit(ADDR, mask) != 0; |
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} |
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static inline void clear_bit(unsigned long nr, volatile unsigned long *addr) |
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{ |
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unsigned long *ADDR, mask; |
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ADDR = ((unsigned long *) addr) + (nr >> 5); |
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mask = 1 << (nr & 31); |
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(void) ___clear_bit(ADDR, mask); |
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} |
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static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr) |
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{ |
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unsigned long *ADDR, mask; |
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ADDR = ((unsigned long *) addr) + (nr >> 5); |
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mask = 1 << (nr & 31); |
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return ___change_bit(ADDR, mask) != 0; |
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} |
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static inline void change_bit(unsigned long nr, volatile unsigned long *addr) |
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{ |
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unsigned long *ADDR, mask; |
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ADDR = ((unsigned long *) addr) + (nr >> 5); |
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mask = 1 << (nr & 31); |
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(void) ___change_bit(ADDR, mask); |
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} |
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#include <asm-generic/bitops/non-atomic.h> |
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#include <asm-generic/bitops/ffz.h> |
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#include <asm-generic/bitops/__ffs.h> |
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#include <asm-generic/bitops/sched.h> |
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#include <asm-generic/bitops/ffs.h> |
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#include <asm-generic/bitops/fls.h> |
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#include <asm-generic/bitops/__fls.h> |
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#include <asm-generic/bitops/fls64.h> |
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#include <asm-generic/bitops/hweight.h> |
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#include <asm-generic/bitops/lock.h> |
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#include <asm-generic/bitops/find.h> |
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#include <asm-generic/bitops/le.h> |
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#include <asm-generic/bitops/ext2-atomic.h> |
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#endif /* __KERNEL__ */ |
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#endif /* defined(_SPARC_BITOPS_H) */
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