#ifdef __KERNEL__
-/*
- * Generic ffs().
- */
-static inline int ffs(int x)
-{
- int r = 1;
-
- if (!x)
- return 0;
- if (!(x & 0xffff)) {
- x >>= 16;
- r += 16;
- }
- if (!(x & 0xff)) {
- x >>= 8;
- r += 8;
- }
- if (!(x & 0xf)) {
- x >>= 4;
- r += 4;
- }
- if (!(x & 3)) {
- x >>= 2;
- r += 2;
- }
- if (!(x & 1)) {
- x >>= 1;
- r += 1;
- }
- return r;
-}
-
-/*
- * Generic __ffs().
- */
-static inline int __ffs(int x)
-{
- int r = 0;
-
- if (!x)
- return 0;
- if (!(x & 0xffff)) {
- x >>= 16;
- r += 16;
- }
- if (!(x & 0xff)) {
- x >>= 8;
- r += 8;
- }
- if (!(x & 0xf)) {
- x >>= 4;
- r += 4;
- }
- if (!(x & 3)) {
- x >>= 2;
- r += 2;
- }
- if (!(x & 1)) {
- x >>= 1;
- r += 1;
- }
- return r;
-}
-
-/*
- * fls: find last bit set.
- */
-#define fls(x) generic_fls(x)
-
-
-/*
- * Every architecture must define this function. It's the fastest
- * way of searching a 140-bit bitmap where the first 100 bits are
- * unlikely to be set. It's guaranteed that at least one of the 140
- * bits is cleared.
- */
-static inline int sched_find_first_bit(unsigned long *b)
-{
- if (unlikely(b[0]))
- return __ffs(b[0]);
- if (unlikely(b[1]))
- return __ffs(b[1]) + 32;
- if (unlikely(b[2]))
- return __ffs(b[2]) + 64;
- if (b[3])
- return __ffs(b[3]) + 96;
- return __ffs(b[4]) + 128;
-}
-
-/*
- * 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)
-{
- unsigned long result = 0;
-
- while(word & 1) {
- result++;
- word >>= 1;
- }
- return result;
-}
-
+#include <asm-generic/bitops/ffs.h>
+#include <asm-generic/bitops/__ffs.h>
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/ffz.h>
static __inline__ void set_bit(int nr, volatile unsigned long * addr)
{
- int * a = (int *) addr;
- int mask;
- unsigned long flags;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- local_irq_save(flags);
- *a |= mask;
- local_irq_restore(flags);
+#ifdef CONFIG_COLDFIRE
+ __asm__ __volatile__ ("lea %0,%%a0; bset %1,(%%a0)"
+ : "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "d" (nr)
+ : "%a0", "cc");
+#else
+ __asm__ __volatile__ ("bset %1,%0"
+ : "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "di" (nr)
+ : "cc");
+#endif
}
-static __inline__ void __set_bit(int nr, volatile unsigned long * addr)
-{
- int * a = (int *) addr;
- int mask;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- *a |= mask;
-}
+#define __set_bit(nr, addr) set_bit(nr, addr)
/*
* clear_bit() doesn't provide any barrier for the compiler.
static __inline__ void clear_bit(int nr, volatile unsigned long * addr)
{
- int * a = (int *) addr;
- int mask;
- unsigned long flags;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- local_irq_save(flags);
- *a &= ~mask;
- local_irq_restore(flags);
+#ifdef CONFIG_COLDFIRE
+ __asm__ __volatile__ ("lea %0,%%a0; bclr %1,(%%a0)"
+ : "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "d" (nr)
+ : "%a0", "cc");
+#else
+ __asm__ __volatile__ ("bclr %1,%0"
+ : "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "di" (nr)
+ : "cc");
+#endif
}
-static __inline__ void __clear_bit(int nr, volatile unsigned long * addr)
-{
- int * a = (int *) addr;
- int mask;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- *a &= ~mask;
-}
+#define __clear_bit(nr, addr) clear_bit(nr, addr)
static __inline__ void change_bit(int nr, volatile unsigned long * addr)
{
- int mask, flags;
- unsigned long *ADDR = (unsigned long *) addr;
-
- ADDR += nr >> 5;
- mask = 1 << (nr & 31);
- local_irq_save(flags);
- *ADDR ^= mask;
- local_irq_restore(flags);
+#ifdef CONFIG_COLDFIRE
+ __asm__ __volatile__ ("lea %0,%%a0; bchg %1,(%%a0)"
+ : "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "d" (nr)
+ : "%a0", "cc");
+#else
+ __asm__ __volatile__ ("bchg %1,%0"
+ : "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "di" (nr)
+ : "cc");
+#endif
}
-static __inline__ void __change_bit(int nr, volatile unsigned long * addr)
-{
- int mask;
- unsigned long *ADDR = (unsigned long *) addr;
-
- ADDR += nr >> 5;
- mask = 1 << (nr & 31);
- *ADDR ^= mask;
-}
+#define __change_bit(nr, addr) change_bit(nr, addr)
static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr)
{
- int mask, retval;
- volatile unsigned int *a = (volatile unsigned int *) addr;
- unsigned long flags;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- local_irq_save(flags);
- retval = (mask & *a) != 0;
- *a |= mask;
- local_irq_restore(flags);
+ char retval;
+
+#ifdef CONFIG_COLDFIRE
+ __asm__ __volatile__ ("lea %1,%%a0; bset %2,(%%a0); sne %0"
+ : "=d" (retval), "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "d" (nr)
+ : "%a0");
+#else
+ __asm__ __volatile__ ("bset %2,%1; sne %0"
+ : "=d" (retval), "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "di" (nr)
+ /* No clobber */);
+#endif
return retval;
}
-static __inline__ int __test_and_set_bit(int nr, volatile unsigned long * 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;
-}
+#define __test_and_set_bit(nr, addr) test_and_set_bit(nr, addr)
static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr)
{
- int mask, retval;
- volatile unsigned int *a = (volatile unsigned int *) addr;
- unsigned long flags;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- local_irq_save(flags);
- retval = (mask & *a) != 0;
- *a &= ~mask;
- local_irq_restore(flags);
+ char retval;
+
+#ifdef CONFIG_COLDFIRE
+ __asm__ __volatile__ ("lea %1,%%a0; bclr %2,(%%a0); sne %0"
+ : "=d" (retval), "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "d" (nr)
+ : "%a0");
+#else
+ __asm__ __volatile__ ("bclr %2,%1; sne %0"
+ : "=d" (retval), "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "di" (nr)
+ /* No clobber */);
+#endif
return retval;
}
-static __inline__ int __test_and_clear_bit(int nr, volatile unsigned long * 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;
-}
+#define __test_and_clear_bit(nr, addr) test_and_clear_bit(nr, addr)
static __inline__ int test_and_change_bit(int nr, volatile unsigned long * addr)
{
- int mask, retval;
- volatile unsigned int *a = (volatile unsigned int *) addr;
- unsigned long flags;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- local_irq_save(flags);
- retval = (mask & *a) != 0;
- *a ^= mask;
- local_irq_restore(flags);
+ char retval;
+
+#ifdef CONFIG_COLDFIRE
+ __asm__ __volatile__ ("lea %1,%%a0\n\tbchg %2,(%%a0)\n\tsne %0"
+ : "=d" (retval), "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "d" (nr)
+ : "%a0");
+#else
+ __asm__ __volatile__ ("bchg %2,%1; sne %0"
+ : "=d" (retval), "+m" (((volatile char *)addr)[(nr^31) >> 3])
+ : "di" (nr)
+ /* No clobber */);
+#endif
return retval;
}
-static __inline__ int __test_and_change_bit(int nr, volatile unsigned long * 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;
-}
+#define __test_and_change_bit(nr, addr) test_and_change_bit(nr, addr)
/*
* This routine doesn't need to be atomic.
return ((1UL << (nr & 31)) & (((const volatile unsigned int *) addr)[nr >> 5])) != 0;
}
-static __inline__ int __test_bit(int nr, const unsigned long * addr)
+static __inline__ int __test_bit(int nr, const volatile unsigned long * addr)
{
int * a = (int *) addr;
int mask;
__constant_test_bit((nr),(addr)) : \
__test_bit((nr),(addr)))
-#define find_first_zero_bit(addr, size) \
- find_next_zero_bit((addr), (size), 0)
-
-static __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)
-
+#include <asm-generic/bitops/find.h>
+#include <asm-generic/bitops/hweight.h>
static __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);
- local_irq_save(flags);
- retval = (mask & *ADDR) != 0;
- *ADDR |= mask;
- local_irq_restore(flags);
+ char retval;
+
+#ifdef CONFIG_COLDFIRE
+ __asm__ __volatile__ ("lea %1,%%a0; bset %2,(%%a0); sne %0"
+ : "=d" (retval), "+m" (((volatile char *)addr)[nr >> 3])
+ : "d" (nr)
+ : "%a0");
+#else
+ __asm__ __volatile__ ("bset %2,%1; sne %0"
+ : "=d" (retval), "+m" (((volatile char *)addr)[nr >> 3])
+ : "di" (nr)
+ /* No clobber */);
+#endif
+
return retval;
}
static __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);
- local_irq_save(flags);
- retval = (mask & *ADDR) != 0;
- *ADDR &= ~mask;
- local_irq_restore(flags);
+ char retval;
+
+#ifdef CONFIG_COLDFIRE
+ __asm__ __volatile__ ("lea %1,%%a0; bclr %2,(%%a0); sne %0"
+ : "=d" (retval), "+m" (((volatile char *)addr)[nr >> 3])
+ : "d" (nr)
+ : "%a0");
+#else
+ __asm__ __volatile__ ("bclr %2,%1; sne %0"
+ : "=d" (retval), "+m" (((volatile char *)addr)[nr >> 3])
+ : "di" (nr)
+ /* No clobber */);
+#endif
+
return retval;
}
static __inline__ int ext2_test_bit(int nr, const volatile void * addr)
{
- int mask;
- const volatile unsigned char *ADDR = (const unsigned char *) addr;
+ char retval;
+
+#ifdef CONFIG_COLDFIRE
+ __asm__ __volatile__ ("lea %1,%%a0; btst %2,(%%a0); sne %0"
+ : "=d" (retval)
+ : "m" (((const volatile char *)addr)[nr >> 3]), "d" (nr)
+ : "%a0");
+#else
+ __asm__ __volatile__ ("btst %2,%1; sne %0"
+ : "=d" (retval)
+ : "m" (((const volatile char *)addr)[nr >> 3]), "di" (nr)
+ /* No clobber */);
+#endif
- ADDR += nr >> 3;
- mask = 1 << (nr & 0x07);
- return ((mask & *ADDR) != 0);
+ return retval;
}
#define ext2_find_first_zero_bit(addr, size) \
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)
+#include <asm-generic/bitops/minix.h>
#endif /* __KERNEL__ */
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/fls64.h>
+
#endif /* _M68KNOMMU_BITOPS_H */
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