diff options
Diffstat (limited to 'arch/m68k/include/asm/bitops_mm.h')
| -rw-r--r-- | arch/m68k/include/asm/bitops_mm.h | 501 |
1 files changed, 0 insertions, 501 deletions
diff --git a/arch/m68k/include/asm/bitops_mm.h b/arch/m68k/include/asm/bitops_mm.h deleted file mode 100644 index 89cf5b814a4d..000000000000 --- a/arch/m68k/include/asm/bitops_mm.h +++ /dev/null @@ -1,501 +0,0 @@ -#ifndef _M68K_BITOPS_H -#define _M68K_BITOPS_H -/* - * Copyright 1992, Linus Torvalds. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -#ifndef _LINUX_BITOPS_H -#error only <linux/bitops.h> can be included directly -#endif - -#include <linux/compiler.h> - -/* - * Require 68020 or better. - * - * They use the standard big-endian m680x0 bit ordering. - */ - -#define test_and_set_bit(nr,vaddr) \ - (__builtin_constant_p(nr) ? \ - __constant_test_and_set_bit(nr, vaddr) : \ - __generic_test_and_set_bit(nr, vaddr)) - -#define __test_and_set_bit(nr,vaddr) test_and_set_bit(nr,vaddr) - -static inline int __constant_test_and_set_bit(int nr, unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - char retval; - - __asm__ __volatile__ ("bset %2,%1; sne %0" - : "=d" (retval), "+m" (*p) - : "di" (nr & 7)); - - return retval; -} - -static inline int __generic_test_and_set_bit(int nr, unsigned long *vaddr) -{ - char retval; - - __asm__ __volatile__ ("bfset %2{%1:#1}; sne %0" - : "=d" (retval) : "d" (nr^31), "o" (*vaddr) : "memory"); - - return retval; -} - -#define set_bit(nr,vaddr) \ - (__builtin_constant_p(nr) ? \ - __constant_set_bit(nr, vaddr) : \ - __generic_set_bit(nr, vaddr)) - -#define __set_bit(nr,vaddr) set_bit(nr,vaddr) - -static inline void __constant_set_bit(int nr, volatile unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - __asm__ __volatile__ ("bset %1,%0" - : "+m" (*p) : "di" (nr & 7)); -} - -static inline void __generic_set_bit(int nr, volatile unsigned long *vaddr) -{ - __asm__ __volatile__ ("bfset %1{%0:#1}" - : : "d" (nr^31), "o" (*vaddr) : "memory"); -} - -#define test_and_clear_bit(nr,vaddr) \ - (__builtin_constant_p(nr) ? \ - __constant_test_and_clear_bit(nr, vaddr) : \ - __generic_test_and_clear_bit(nr, vaddr)) - -#define __test_and_clear_bit(nr,vaddr) test_and_clear_bit(nr,vaddr) - -static inline int __constant_test_and_clear_bit(int nr, unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - char retval; - - __asm__ __volatile__ ("bclr %2,%1; sne %0" - : "=d" (retval), "+m" (*p) - : "di" (nr & 7)); - - return retval; -} - -static inline int __generic_test_and_clear_bit(int nr, unsigned long *vaddr) -{ - char retval; - - __asm__ __volatile__ ("bfclr %2{%1:#1}; sne %0" - : "=d" (retval) : "d" (nr^31), "o" (*vaddr) : "memory"); - - return retval; -} - -/* - * clear_bit() doesn't provide any barrier for the compiler. - */ -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() - -#define clear_bit(nr,vaddr) \ - (__builtin_constant_p(nr) ? \ - __constant_clear_bit(nr, vaddr) : \ - __generic_clear_bit(nr, vaddr)) -#define __clear_bit(nr,vaddr) clear_bit(nr,vaddr) - -static inline void __constant_clear_bit(int nr, volatile unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - __asm__ __volatile__ ("bclr %1,%0" - : "+m" (*p) : "di" (nr & 7)); -} - -static inline void __generic_clear_bit(int nr, volatile unsigned long *vaddr) -{ - __asm__ __volatile__ ("bfclr %1{%0:#1}" - : : "d" (nr^31), "o" (*vaddr) : "memory"); -} - -#define test_and_change_bit(nr,vaddr) \ - (__builtin_constant_p(nr) ? \ - __constant_test_and_change_bit(nr, vaddr) : \ - __generic_test_and_change_bit(nr, vaddr)) - -#define __test_and_change_bit(nr,vaddr) test_and_change_bit(nr,vaddr) -#define __change_bit(nr,vaddr) change_bit(nr,vaddr) - -static inline int __constant_test_and_change_bit(int nr, unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - char retval; - - __asm__ __volatile__ ("bchg %2,%1; sne %0" - : "=d" (retval), "+m" (*p) - : "di" (nr & 7)); - - return retval; -} - -static inline int __generic_test_and_change_bit(int nr, unsigned long *vaddr) -{ - char retval; - - __asm__ __volatile__ ("bfchg %2{%1:#1}; sne %0" - : "=d" (retval) : "d" (nr^31), "o" (*vaddr) : "memory"); - - return retval; -} - -#define change_bit(nr,vaddr) \ - (__builtin_constant_p(nr) ? \ - __constant_change_bit(nr, vaddr) : \ - __generic_change_bit(nr, vaddr)) - -static inline void __constant_change_bit(int nr, unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - __asm__ __volatile__ ("bchg %1,%0" - : "+m" (*p) : "di" (nr & 7)); -} - -static inline void __generic_change_bit(int nr, unsigned long *vaddr) -{ - __asm__ __volatile__ ("bfchg %1{%0:#1}" - : : "d" (nr^31), "o" (*vaddr) : "memory"); -} - -static inline int test_bit(int nr, const unsigned long *vaddr) -{ - return (vaddr[nr >> 5] & (1UL << (nr & 31))) != 0; -} - -static inline int find_first_zero_bit(const unsigned long *vaddr, - unsigned size) -{ - const unsigned long *p = vaddr; - int res = 32; - unsigned int words; - unsigned long num; - - if (!size) - return 0; - - words = (size + 31) >> 5; - while (!(num = ~*p++)) { - if (!--words) - goto out; - } - - __asm__ __volatile__ ("bfffo %1{#0,#0},%0" - : "=d" (res) : "d" (num & -num)); - res ^= 31; -out: - res += ((long)p - (long)vaddr - 4) * 8; - return res < size ? res : size; -} -#define find_first_zero_bit find_first_zero_bit - -static inline int find_next_zero_bit(const unsigned long *vaddr, int size, - int offset) -{ - const unsigned long *p = vaddr + (offset >> 5); - int bit = offset & 31UL, res; - - if (offset >= size) - return size; - - if (bit) { - unsigned long num = ~*p++ & (~0UL << bit); - offset -= bit; - - /* Look for zero in first longword */ - __asm__ __volatile__ ("bfffo %1{#0,#0},%0" - : "=d" (res) : "d" (num & -num)); - if (res < 32) { - offset += res ^ 31; - return offset < size ? offset : size; - } - offset += 32; - - if (offset >= size) - return size; - } - /* No zero yet, search remaining full bytes for a zero */ - return offset + find_first_zero_bit(p, size - offset); -} -#define find_next_zero_bit find_next_zero_bit - -static inline int find_first_bit(const unsigned long *vaddr, unsigned size) -{ - const unsigned long *p = vaddr; - int res = 32; - unsigned int words; - unsigned long num; - - if (!size) - return 0; - - words = (size + 31) >> 5; - while (!(num = *p++)) { - if (!--words) - goto out; - } - - __asm__ __volatile__ ("bfffo %1{#0,#0},%0" - : "=d" (res) : "d" (num & -num)); - res ^= 31; -out: - res += ((long)p - (long)vaddr - 4) * 8; - return res < size ? res : size; -} -#define find_first_bit find_first_bit - -static inline int find_next_bit(const unsigned long *vaddr, int size, - int offset) -{ - const unsigned long *p = vaddr + (offset >> 5); - int bit = offset & 31UL, res; - - if (offset >= size) - return size; - - if (bit) { - unsigned long num = *p++ & (~0UL << bit); - offset -= bit; - - /* Look for one in first longword */ - __asm__ __volatile__ ("bfffo %1{#0,#0},%0" - : "=d" (res) : "d" (num & -num)); - if (res < 32) { - offset += res ^ 31; - return offset < size ? offset : size; - } - offset += 32; - - if (offset >= size) - return size; - } - /* No one yet, search remaining full bytes for a one */ - return offset + find_first_bit(p, size - offset); -} -#define find_next_bit find_next_bit - -/* - * ffz = Find First Zero in word. Undefined if no zero exists, - * so code should check against ~0UL first.. - */ -static inline unsigned long ffz(unsigned long word) -{ - int res; - - __asm__ __volatile__ ("bfffo %1{#0,#0},%0" - : "=d" (res) : "d" (~word & -~word)); - return res ^ 31; -} - -#ifdef __KERNEL__ - -/* - * ffs: find first bit set. This is defined the same way as - * the libc and compiler builtin ffs routines, therefore - * differs in spirit from the above ffz (man ffs). - */ - -static inline int ffs(int x) -{ - int cnt; - - asm ("bfffo %1{#0:#0},%0" : "=d" (cnt) : "dm" (x & -x)); - - return 32 - cnt; -} -#define __ffs(x) (ffs(x) - 1) - -/* - * fls: find last bit set. - */ - -static inline int fls(int x) -{ - int cnt; - - asm ("bfffo %1{#0,#0},%0" : "=d" (cnt) : "dm" (x)); - - return 32 - cnt; -} - -static inline int __fls(int x) -{ - return fls(x) - 1; -} - -#include <asm-generic/bitops/fls64.h> -#include <asm-generic/bitops/sched.h> -#include <asm-generic/bitops/hweight.h> -#include <asm-generic/bitops/lock.h> - -/* Bitmap functions for the little endian bitmap. */ - -static inline void __set_bit_le(int nr, void *addr) -{ - __set_bit(nr ^ 24, addr); -} - -static inline void __clear_bit_le(int nr, void *addr) -{ - __clear_bit(nr ^ 24, addr); -} - -static inline int __test_and_set_bit_le(int nr, void *addr) -{ - return __test_and_set_bit(nr ^ 24, addr); -} - -static inline int test_and_set_bit_le(int nr, void *addr) -{ - return test_and_set_bit(nr ^ 24, addr); -} - -static inline int __test_and_clear_bit_le(int nr, void *addr) -{ - return __test_and_clear_bit(nr ^ 24, addr); -} - -static inline int test_and_clear_bit_le(int nr, void *addr) -{ - return test_and_clear_bit(nr ^ 24, addr); -} - -static inline int test_bit_le(int nr, const void *vaddr) -{ - const unsigned char *p = vaddr; - return (p[nr >> 3] & (1U << (nr & 7))) != 0; -} - -static inline int find_first_zero_bit_le(const void *vaddr, unsigned size) -{ - const unsigned long *p = vaddr, *addr = vaddr; - int res = 0; - unsigned int words; - - if (!size) - return 0; - - words = (size >> 5) + ((size & 31) > 0); - while (*p++ == ~0UL) { - if (--words == 0) - goto out; - } - - --p; - for (res = 0; res < 32; res++) - if (!test_bit_le(res, p)) - break; -out: - res += (p - addr) * 32; - return res < size ? res : size; -} -#define find_first_zero_bit_le find_first_zero_bit_le - -static inline unsigned long find_next_zero_bit_le(const void *addr, - unsigned long size, unsigned long offset) -{ - const unsigned long *p = addr; - int bit = offset & 31UL, res; - - if (offset >= size) - return size; - - p += offset >> 5; - - if (bit) { - offset -= bit; - /* Look for zero in first longword */ - for (res = bit; res < 32; res++) - if (!test_bit_le(res, p)) { - offset += res; - return offset < size ? offset : size; - } - p++; - offset += 32; - - if (offset >= size) - return size; - } - /* No zero yet, search remaining full bytes for a zero */ - return offset + find_first_zero_bit_le(p, size - offset); -} -#define find_next_zero_bit_le find_next_zero_bit_le - -static inline int find_first_bit_le(const void *vaddr, unsigned size) -{ - const unsigned long *p = vaddr, *addr = vaddr; - int res = 0; - unsigned int words; - - if (!size) - return 0; - - words = (size >> 5) + ((size & 31) > 0); - while (*p++ == 0UL) { - if (--words == 0) - goto out; - } - - --p; - for (res = 0; res < 32; res++) - if (test_bit_le(res, p)) - break; -out: - res += (p - addr) * 32; - return res < size ? res : size; -} -#define find_first_bit_le find_first_bit_le - -static inline unsigned long find_next_bit_le(const void *addr, - unsigned long size, unsigned long offset) -{ - const unsigned long *p = addr; - int bit = offset & 31UL, res; - - if (offset >= size) - return size; - - p += offset >> 5; - - if (bit) { - offset -= bit; - /* Look for one in first longword */ - for (res = bit; res < 32; res++) - if (test_bit_le(res, p)) { - offset += res; - return offset < size ? offset : size; - } - p++; - offset += 32; - - if (offset >= size) - return size; - } - /* No set bit yet, search remaining full bytes for a set bit */ - return offset + find_first_bit_le(p, size - offset); -} -#define find_next_bit_le find_next_bit_le - -/* Bitmap functions for the ext2 filesystem. */ - -#define ext2_set_bit_atomic(lock, nr, addr) \ - test_and_set_bit_le(nr, addr) -#define ext2_clear_bit_atomic(lock, nr, addr) \ - test_and_clear_bit_le(nr, addr) - -#endif /* __KERNEL__ */ - -#endif /* _M68K_BITOPS_H */ |