diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/m68k/include/asm/bitops.h')
| -rw-r--r-- | ANDROID_3.4.5/arch/m68k/include/asm/bitops.h | 530 |
1 files changed, 0 insertions, 530 deletions
diff --git a/ANDROID_3.4.5/arch/m68k/include/asm/bitops.h b/ANDROID_3.4.5/arch/m68k/include/asm/bitops.h deleted file mode 100644 index c6baa913..00000000 --- a/ANDROID_3.4.5/arch/m68k/include/asm/bitops.h +++ /dev/null @@ -1,530 +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> - -/* - * Bit access functions vary across the ColdFire and 68k families. - * So we will break them out here, and then macro in the ones we want. - * - * ColdFire - supports standard bset/bclr/bchg with register operand only - * 68000 - supports standard bset/bclr/bchg with memory operand - * >= 68020 - also supports the bfset/bfclr/bfchg instructions - * - * Although it is possible to use only the bset/bclr/bchg with register - * operands on all platforms you end up with larger generated code. - * So we use the best form possible on a given platform. - */ - -static inline void bset_reg_set_bit(int nr, volatile unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - - __asm__ __volatile__ ("bset %1,(%0)" - : - : "a" (p), "di" (nr & 7) - : "memory"); -} - -static inline void bset_mem_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 bfset_mem_set_bit(int nr, volatile unsigned long *vaddr) -{ - __asm__ __volatile__ ("bfset %1{%0:#1}" - : - : "d" (nr ^ 31), "o" (*vaddr) - : "memory"); -} - -#if defined(CONFIG_COLDFIRE) -#define set_bit(nr, vaddr) bset_reg_set_bit(nr, vaddr) -#elif defined(CONFIG_CPU_HAS_NO_BITFIELDS) -#define set_bit(nr, vaddr) bset_mem_set_bit(nr, vaddr) -#else -#define set_bit(nr, vaddr) (__builtin_constant_p(nr) ? \ - bset_mem_set_bit(nr, vaddr) : \ - bfset_mem_set_bit(nr, vaddr)) -#endif - -#define __set_bit(nr, vaddr) set_bit(nr, vaddr) - - -/* - * clear_bit() doesn't provide any barrier for the compiler. - */ -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() - -static inline void bclr_reg_clear_bit(int nr, volatile unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - - __asm__ __volatile__ ("bclr %1,(%0)" - : - : "a" (p), "di" (nr & 7) - : "memory"); -} - -static inline void bclr_mem_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 bfclr_mem_clear_bit(int nr, volatile unsigned long *vaddr) -{ - __asm__ __volatile__ ("bfclr %1{%0:#1}" - : - : "d" (nr ^ 31), "o" (*vaddr) - : "memory"); -} - -#if defined(CONFIG_COLDFIRE) -#define clear_bit(nr, vaddr) bclr_reg_clear_bit(nr, vaddr) -#elif defined(CONFIG_CPU_HAS_NO_BITFIELDS) -#define clear_bit(nr, vaddr) bclr_mem_clear_bit(nr, vaddr) -#else -#define clear_bit(nr, vaddr) (__builtin_constant_p(nr) ? \ - bclr_mem_clear_bit(nr, vaddr) : \ - bfclr_mem_clear_bit(nr, vaddr)) -#endif - -#define __clear_bit(nr, vaddr) clear_bit(nr, vaddr) - - -static inline void bchg_reg_change_bit(int nr, volatile unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - - __asm__ __volatile__ ("bchg %1,(%0)" - : - : "a" (p), "di" (nr & 7) - : "memory"); -} - -static inline void bchg_mem_change_bit(int nr, volatile unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - - __asm__ __volatile__ ("bchg %1,%0" - : "+m" (*p) - : "di" (nr & 7)); -} - -static inline void bfchg_mem_change_bit(int nr, volatile unsigned long *vaddr) -{ - __asm__ __volatile__ ("bfchg %1{%0:#1}" - : - : "d" (nr ^ 31), "o" (*vaddr) - : "memory"); -} - -#if defined(CONFIG_COLDFIRE) -#define change_bit(nr, vaddr) bchg_reg_change_bit(nr, vaddr) -#elif defined(CONFIG_CPU_HAS_NO_BITFIELDS) -#define change_bit(nr, vaddr) bchg_mem_change_bit(nr, vaddr) -#else -#define change_bit(nr, vaddr) (__builtin_constant_p(nr) ? \ - bchg_mem_change_bit(nr, vaddr) : \ - bfchg_mem_change_bit(nr, vaddr)) -#endif - -#define __change_bit(nr, vaddr) change_bit(nr, vaddr) - - -static inline int test_bit(int nr, const unsigned long *vaddr) -{ - return (vaddr[nr >> 5] & (1UL << (nr & 31))) != 0; -} - - -static inline int bset_reg_test_and_set_bit(int nr, - volatile unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - char retval; - - __asm__ __volatile__ ("bset %2,(%1); sne %0" - : "=d" (retval) - : "a" (p), "di" (nr & 7) - : "memory"); - return retval; -} - -static inline int bset_mem_test_and_set_bit(int nr, - volatile 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 bfset_mem_test_and_set_bit(int nr, - volatile unsigned long *vaddr) -{ - char retval; - - __asm__ __volatile__ ("bfset %2{%1:#1}; sne %0" - : "=d" (retval) - : "d" (nr ^ 31), "o" (*vaddr) - : "memory"); - return retval; -} - -#if defined(CONFIG_COLDFIRE) -#define test_and_set_bit(nr, vaddr) bset_reg_test_and_set_bit(nr, vaddr) -#elif defined(CONFIG_CPU_HAS_NO_BITFIELDS) -#define test_and_set_bit(nr, vaddr) bset_mem_test_and_set_bit(nr, vaddr) -#else -#define test_and_set_bit(nr, vaddr) (__builtin_constant_p(nr) ? \ - bset_mem_test_and_set_bit(nr, vaddr) : \ - bfset_mem_test_and_set_bit(nr, vaddr)) -#endif - -#define __test_and_set_bit(nr, vaddr) test_and_set_bit(nr, vaddr) - - -static inline int bclr_reg_test_and_clear_bit(int nr, - volatile unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - char retval; - - __asm__ __volatile__ ("bclr %2,(%1); sne %0" - : "=d" (retval) - : "a" (p), "di" (nr & 7) - : "memory"); - return retval; -} - -static inline int bclr_mem_test_and_clear_bit(int nr, - volatile 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 bfclr_mem_test_and_clear_bit(int nr, - volatile unsigned long *vaddr) -{ - char retval; - - __asm__ __volatile__ ("bfclr %2{%1:#1}; sne %0" - : "=d" (retval) - : "d" (nr ^ 31), "o" (*vaddr) - : "memory"); - return retval; -} - -#if defined(CONFIG_COLDFIRE) -#define test_and_clear_bit(nr, vaddr) bclr_reg_test_and_clear_bit(nr, vaddr) -#elif defined(CONFIG_CPU_HAS_NO_BITFIELDS) -#define test_and_clear_bit(nr, vaddr) bclr_mem_test_and_clear_bit(nr, vaddr) -#else -#define test_and_clear_bit(nr, vaddr) (__builtin_constant_p(nr) ? \ - bclr_mem_test_and_clear_bit(nr, vaddr) : \ - bfclr_mem_test_and_clear_bit(nr, vaddr)) -#endif - -#define __test_and_clear_bit(nr, vaddr) test_and_clear_bit(nr, vaddr) - - -static inline int bchg_reg_test_and_change_bit(int nr, - volatile unsigned long *vaddr) -{ - char *p = (char *)vaddr + (nr ^ 31) / 8; - char retval; - - __asm__ __volatile__ ("bchg %2,(%1); sne %0" - : "=d" (retval) - : "a" (p), "di" (nr & 7) - : "memory"); - return retval; -} - -static inline int bchg_mem_test_and_change_bit(int nr, - volatile 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 bfchg_mem_test_and_change_bit(int nr, - volatile unsigned long *vaddr) -{ - char retval; - - __asm__ __volatile__ ("bfchg %2{%1:#1}; sne %0" - : "=d" (retval) - : "d" (nr ^ 31), "o" (*vaddr) - : "memory"); - return retval; -} - -#if defined(CONFIG_COLDFIRE) -#define test_and_change_bit(nr, vaddr) bchg_reg_test_and_change_bit(nr, vaddr) -#elif defined(CONFIG_CPU_HAS_NO_BITFIELDS) -#define test_and_change_bit(nr, vaddr) bchg_mem_test_and_change_bit(nr, vaddr) -#else -#define test_and_change_bit(nr, vaddr) (__builtin_constant_p(nr) ? \ - bchg_mem_test_and_change_bit(nr, vaddr) : \ - bfchg_mem_test_and_change_bit(nr, vaddr)) -#endif - -#define __test_and_change_bit(nr, vaddr) test_and_change_bit(nr, vaddr) - - -/* - * The true 68020 and more advanced processors support the "bfffo" - * instruction for finding bits. ColdFire and simple 68000 parts - * (including CPU32) do not support this. They simply use the generic - * functions. - */ -#if defined(CONFIG_CPU_HAS_NO_BITFIELDS) -#include <asm-generic/bitops/find.h> -#include <asm-generic/bitops/ffz.h> -#else - -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; -} - -#endif - -#ifdef __KERNEL__ - -#if defined(CONFIG_CPU_HAS_NO_BITFIELDS) - -/* - * The newer ColdFire family members support a "bitrev" instruction - * and we can use that to implement a fast ffs. Older Coldfire parts, - * and normal 68000 parts don't have anything special, so we use the - * generic functions for those. - */ -#if (defined(__mcfisaaplus__) || defined(__mcfisac__)) && \ - !defined(CONFIG_M68000) && !defined(CONFIG_MCPU32) -static inline int __ffs(int x) -{ - __asm__ __volatile__ ("bitrev %0; ff1 %0" - : "=d" (x) - : "0" (x)); - return x; -} - -static inline int ffs(int x) -{ - if (!x) - return 0; - return __ffs(x) + 1; -} - -#else -#include <asm-generic/bitops/ffs.h> -#include <asm-generic/bitops/__ffs.h> -#endif - -#include <asm-generic/bitops/fls.h> -#include <asm-generic/bitops/__fls.h> - -#else - -/* - * 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; -} - -#endif - -#include <asm-generic/bitops/ext2-atomic.h> -#include <asm-generic/bitops/le.h> -#include <asm-generic/bitops/fls64.h> -#include <asm-generic/bitops/sched.h> -#include <asm-generic/bitops/hweight.h> -#include <asm-generic/bitops/lock.h> -#endif /* __KERNEL__ */ - -#endif /* _M68K_BITOPS_H */ |