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Diffstat (limited to 'include/asm-microblaze/bitops.h')
| -rw-r--r-- | include/asm-microblaze/bitops.h | 392 |
1 files changed, 0 insertions, 392 deletions
diff --git a/include/asm-microblaze/bitops.h b/include/asm-microblaze/bitops.h deleted file mode 100644 index e8c835f..0000000 --- a/include/asm-microblaze/bitops.h +++ /dev/null @@ -1,392 +0,0 @@ -#ifndef _MICROBLAZE_BITOPS_H -#define _MICROBLAZE_BITOPS_H - -/* - * Copyright 1992, Linus Torvalds. - */ - -#include <linux/config.h> -#include <asm/byteorder.h> /* swab32 */ -#include <asm/system.h> /* save_flags */ - -#ifdef __KERNEL__ -/* - * Function prototypes to keep gcc -Wall happy - */ - -/* - * The __ functions are not atomic - */ - -extern void set_bit(int nr, volatile void * addr); -extern void __set_bit(int nr, volatile void * addr); - -extern void clear_bit(int nr, volatile void * addr); -#define __clear_bit(nr, addr) clear_bit(nr, addr) -#define PLATFORM__CLEAR_BIT - -extern void change_bit(int nr, volatile void * addr); -extern void __change_bit(int nr, volatile void * addr); -extern int test_and_set_bit(int nr, volatile void * addr); -extern int __test_and_set_bit(int nr, volatile void * addr); -extern int test_and_clear_bit(int nr, volatile void * addr); -extern int __test_and_clear_bit(int nr, volatile void * addr); -extern int test_and_change_bit(int nr, volatile void * addr); -extern int __test_and_change_bit(int nr, volatile void * addr); -extern int __constant_test_bit(int nr, const volatile void * addr); -extern int __test_bit(int nr, volatile void * addr); -extern int find_first_zero_bit(void * addr, unsigned size); -extern int find_next_zero_bit (void * addr, int size, int offset); - -/* - * ffz = Find First Zero in word. Undefined if no zero exists, - * so code should check against ~0UL first.. - */ -extern __inline__ unsigned long ffz(unsigned long word) -{ - unsigned long result = 0; - - while(word & 1) { - result++; - word >>= 1; - } - return result; -} - - -extern __inline__ void set_bit(int nr, volatile void * addr) -{ - int * a = (int *) addr; - int mask; - unsigned long flags; - - a += nr >> 5; - mask = 1 << (nr & 0x1f); - save_flags_cli(flags); - *a |= mask; - restore_flags(flags); -} - -extern __inline__ void __set_bit(int nr, volatile void * addr) -{ - int * a = (int *) addr; - int mask; - - a += nr >> 5; - mask = 1 << (nr & 0x1f); - *a |= mask; -} -#define PLATFORM__SET_BIT - -/* - * clear_bit() doesn't provide any barrier for the compiler. - */ -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() - -extern __inline__ void clear_bit(int nr, volatile void * addr) -{ - int * a = (int *) addr; - int mask; - unsigned long flags; - - a += nr >> 5; - mask = 1 << (nr & 0x1f); - save_flags_cli(flags); - *a &= ~mask; - restore_flags(flags); -} - -extern __inline__ void change_bit(int nr, volatile void * addr) -{ - int mask; - unsigned long flags; - unsigned long *ADDR = (unsigned long *) addr; - - ADDR += nr >> 5; - mask = 1 << (nr & 31); - save_flags_cli(flags); - *ADDR ^= mask; - restore_flags(flags); -} - -extern __inline__ void __change_bit(int nr, volatile void * addr) -{ - int mask; - unsigned long *ADDR = (unsigned long *) addr; - - ADDR += nr >> 5; - mask = 1 << (nr & 31); - *ADDR ^= mask; -} - -extern __inline__ int test_and_set_bit(int nr, volatile void * addr) -{ - int mask, retval; - volatile unsigned int *a = (volatile unsigned int *) addr; - unsigned long flags; - - a += nr >> 5; - mask = 1 << (nr & 0x1f); - save_flags_cli(flags); - retval = (mask & *a) != 0; - *a |= mask; - restore_flags(flags); - - return retval; -} - -extern __inline__ int __test_and_set_bit(int nr, volatile void * addr) -{ - int mask, retval; - volatile unsigned int *a = (volatile unsigned int *) addr; - - a += nr >> 5; - mask = 1 << (nr & 0x1f); - retval = (mask & *a) != 0; - *a |= mask; - return retval; -} - -extern __inline__ int test_and_clear_bit(int nr, volatile void * addr) -{ - int mask, retval; - volatile unsigned int *a = (volatile unsigned int *) addr; - unsigned long flags; - - a += nr >> 5; - mask = 1 << (nr & 0x1f); - save_flags_cli(flags); - retval = (mask & *a) != 0; - *a &= ~mask; - restore_flags(flags); - - return retval; -} - -extern __inline__ int __test_and_clear_bit(int nr, volatile void * addr) -{ - int mask, retval; - volatile unsigned int *a = (volatile unsigned int *) addr; - - a += nr >> 5; - mask = 1 << (nr & 0x1f); - retval = (mask & *a) != 0; - *a &= ~mask; - return retval; -} - -extern __inline__ int test_and_change_bit(int nr, volatile void * addr) -{ - int mask, retval; - volatile unsigned int *a = (volatile unsigned int *) addr; - unsigned long flags; - - a += nr >> 5; - mask = 1 << (nr & 0x1f); - save_flags_cli(flags); - retval = (mask & *a) != 0; - *a ^= mask; - restore_flags(flags); - - return retval; -} - -extern __inline__ int __test_and_change_bit(int nr, volatile void * addr) -{ - int mask, retval; - volatile unsigned int *a = (volatile unsigned int *) addr; - - a += nr >> 5; - mask = 1 << (nr & 0x1f); - retval = (mask & *a) != 0; - *a ^= mask; - return retval; -} - -/* - * This routine doesn't need to be atomic. - */ -extern __inline__ int __constant_test_bit(int nr, const volatile void * addr) -{ - return ((1UL << (nr & 31)) & (((const volatile unsigned int *) addr)[nr >> 5])) != 0; -} - -extern __inline__ int __test_bit(int nr, volatile void * addr) -{ - int * a = (int *) addr; - int mask; - - a += nr >> 5; - mask = 1 << (nr & 0x1f); - return ((mask & *a) != 0); -} - -#define test_bit(nr,addr) \ -(__builtin_constant_p(nr) ? \ - __constant_test_bit((nr),(addr)) : \ - __test_bit((nr),(addr))) - -#define find_first_zero_bit(addr, size) \ - find_next_zero_bit((addr), (size), 0) - -extern __inline__ int find_next_zero_bit (void * addr, int size, int offset) -{ - unsigned long *p = ((unsigned long *) addr) + (offset >> 5); - unsigned long result = offset & ~31UL; - unsigned long tmp; - - if (offset >= size) - return size; - size -= result; - offset &= 31UL; - if (offset) { - tmp = *(p++); - tmp |= ~0UL >> (32-offset); - if (size < 32) - goto found_first; - if (~tmp) - goto found_middle; - size -= 32; - result += 32; - } - while (size & ~31UL) { - if (~(tmp = *(p++))) - goto found_middle; - result += 32; - size -= 32; - } - if (!size) - return result; - tmp = *p; - -found_first: - tmp |= ~0UL >> size; -found_middle: - return result + ffz(tmp); -} - -/* - * hweightN: returns the hamming weight (i.e. the number - * of bits set) of a N-bit word - */ - -#define hweight32(x) generic_hweight32(x) -#define hweight16(x) generic_hweight16(x) -#define hweight8(x) generic_hweight8(x) - - -extern __inline__ int ext2_set_bit(int nr, volatile void * addr) -{ - int mask, retval; - unsigned long flags; - volatile unsigned char *ADDR = (unsigned char *) addr; - - ADDR += nr >> 3; - mask = 1 << (nr & 0x07); - save_flags_cli(flags); - retval = (mask & *ADDR) != 0; - *ADDR |= mask; - restore_flags(flags); - return retval; -} - -extern __inline__ int ext2_clear_bit(int nr, volatile void * addr) -{ - int mask, retval; - unsigned long flags; - volatile unsigned char *ADDR = (unsigned char *) addr; - - ADDR += nr >> 3; - mask = 1 << (nr & 0x07); - save_flags_cli(flags); - retval = (mask & *ADDR) != 0; - *ADDR &= ~mask; - restore_flags(flags); - return retval; -} - -extern __inline__ int ext2_test_bit(int nr, const volatile void * addr) -{ - int mask; - const volatile unsigned char *ADDR = (const unsigned char *) addr; - - ADDR += nr >> 3; - mask = 1 << (nr & 0x07); - return ((mask & *ADDR) != 0); -} - -#define ext2_find_first_zero_bit(addr, size) \ - ext2_find_next_zero_bit((addr), (size), 0) - -extern __inline__ unsigned long ext2_find_next_zero_bit(void *addr, unsigned long size, unsigned long offset) -{ - unsigned long *p = ((unsigned long *) addr) + (offset >> 5); - unsigned long result = offset & ~31UL; - unsigned long tmp; - - if (offset >= size) - return size; - size -= result; - offset &= 31UL; - if(offset) { - /* We hold the little endian value in tmp, but then the - * shift is illegal. So we could keep a big endian value - * in tmp, like this: - * - * tmp = __swab32(*(p++)); - * tmp |= ~0UL >> (32-offset); - * - * but this would decrease preformance, so we change the - * shift: - */ - tmp = *(p++); - tmp |= __swab32(~0UL >> (32-offset)); - if(size < 32) - goto found_first; - if(~tmp) - goto found_middle; - size -= 32; - result += 32; - } - while(size & ~31UL) { - if(~(tmp = *(p++))) - goto found_middle; - result += 32; - size -= 32; - } - if(!size) - return result; - tmp = *p; - -found_first: - /* tmp is little endian, so we would have to swab the shift, - * see above. But then we have to swab tmp below for ffz, so - * we might as well do this here. - */ - return result + ffz(__swab32(tmp) | (~0UL << size)); -found_middle: - return result + ffz(__swab32(tmp)); -} - -/* Bitmap functions for the minix filesystem. */ -#define minix_test_and_set_bit(nr,addr) test_and_set_bit(nr,addr) -#define minix_set_bit(nr,addr) set_bit(nr,addr) -#define minix_test_and_clear_bit(nr,addr) test_and_clear_bit(nr,addr) -#define minix_test_bit(nr,addr) test_bit(nr,addr) -#define minix_find_first_zero_bit(addr,size) find_first_zero_bit(addr,size) - -/** - * hweightN - returns the hamming weight of a N-bit word - * @x: the word to weigh - * - * The Hamming Weight of a number is the total number of bits set in it. - */ - -#define hweight32(x) generic_hweight32(x) -#define hweight16(x) generic_hweight16(x) -#define hweight8(x) generic_hweight8(x) - -#endif /* __KERNEL__ */ - -#endif /* _MICROBLAZE_BITOPS_H */ |