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Diffstat (limited to 'include/asm-v850/bitops.h')
| -rw-r--r-- | include/asm-v850/bitops.h | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/include/asm-v850/bitops.h b/include/asm-v850/bitops.h deleted file mode 100644 index f82f5b4..0000000 --- a/include/asm-v850/bitops.h +++ /dev/null @@ -1,161 +0,0 @@ -/* - * include/asm-v850/bitops.h -- Bit operations - * - * Copyright (C) 2001,02,03,04,05 NEC Electronics Corporation - * Copyright (C) 2001,02,03,04,05 Miles Bader <miles@gnu.org> - * Copyright (C) 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 __V850_BITOPS_H__ -#define __V850_BITOPS_H__ - -#ifndef _LINUX_BITOPS_H -#error only <linux/bitops.h> can be included directly -#endif - -#include <linux/compiler.h> /* unlikely */ -#include <asm/byteorder.h> /* swab32 */ -#include <asm/system.h> /* interrupt enable/disable */ - - -#ifdef __KERNEL__ - -#include <asm-generic/bitops/ffz.h> - -/* - * The __ functions are not atomic - */ - -/* In the following constant-bit-op macros, a "g" constraint is used when - we really need an integer ("i" constraint). This is to avoid - warnings/errors from the compiler in the case where the associated - operand _isn't_ an integer, and shouldn't produce bogus assembly because - use of that form is protected by a guard statement that checks for - constants, and should otherwise be removed by the optimizer. This - _usually_ works -- however, __builtin_constant_p returns true for a - variable with a known constant value too, and unfortunately gcc will - happily put the variable in a register and use the register for the "g" - constraint'd asm operand. To avoid the latter problem, we add a - constant offset to the operand and subtract it back in the asm code; - forcing gcc to do arithmetic on the value is usually enough to get it - to use a real constant value. This is horrible, and ultimately - unreliable too, but it seems to work for now (hopefully gcc will offer - us more control in the future, so we can do a better job). */ - -#define __const_bit_op(op, nr, addr) \ - ({ __asm__ (op " (%0 - 0x123), %1" \ - :: "g" (((nr) & 0x7) + 0x123), \ - "m" (*((char *)(addr) + ((nr) >> 3))) \ - : "memory"); }) -#define __var_bit_op(op, nr, addr) \ - ({ int __nr = (nr); \ - __asm__ (op " %0, [%1]" \ - :: "r" (__nr & 0x7), \ - "r" ((char *)(addr) + (__nr >> 3)) \ - : "memory"); }) -#define __bit_op(op, nr, addr) \ - ((__builtin_constant_p (nr) && (unsigned)(nr) <= 0x7FFFF) \ - ? __const_bit_op (op, nr, addr) \ - : __var_bit_op (op, nr, addr)) - -#define __set_bit(nr, addr) __bit_op ("set1", nr, addr) -#define __clear_bit(nr, addr) __bit_op ("clr1", nr, addr) -#define __change_bit(nr, addr) __bit_op ("not1", nr, addr) - -/* The bit instructions used by `non-atomic' variants are actually atomic. */ -#define set_bit __set_bit -#define clear_bit __clear_bit -#define change_bit __change_bit - - -#define __const_tns_bit_op(op, nr, addr) \ - ({ int __tns_res; \ - __asm__ __volatile__ ( \ - "tst1 (%1 - 0x123), %2; setf nz, %0; " op " (%1 - 0x123), %2" \ - : "=&r" (__tns_res) \ - : "g" (((nr) & 0x7) + 0x123), \ - "m" (*((char *)(addr) + ((nr) >> 3))) \ - : "memory"); \ - __tns_res; \ - }) -#define __var_tns_bit_op(op, nr, addr) \ - ({ int __nr = (nr); \ - int __tns_res; \ - __asm__ __volatile__ ( \ - "tst1 %1, [%2]; setf nz, %0; " op " %1, [%2]" \ - : "=&r" (__tns_res) \ - : "r" (__nr & 0x7), \ - "r" ((char *)(addr) + (__nr >> 3)) \ - : "memory"); \ - __tns_res; \ - }) -#define __tns_bit_op(op, nr, addr) \ - ((__builtin_constant_p (nr) && (unsigned)(nr) <= 0x7FFFF) \ - ? __const_tns_bit_op (op, nr, addr) \ - : __var_tns_bit_op (op, nr, addr)) -#define __tns_atomic_bit_op(op, nr, addr) \ - ({ int __tns_atomic_res, __tns_atomic_flags; \ - local_irq_save (__tns_atomic_flags); \ - __tns_atomic_res = __tns_bit_op (op, nr, addr); \ - local_irq_restore (__tns_atomic_flags); \ - __tns_atomic_res; \ - }) - -#define __test_and_set_bit(nr, addr) __tns_bit_op ("set1", nr, addr) -#define test_and_set_bit(nr, addr) __tns_atomic_bit_op ("set1", nr, addr) - -#define __test_and_clear_bit(nr, addr) __tns_bit_op ("clr1", nr, addr) -#define test_and_clear_bit(nr, addr) __tns_atomic_bit_op ("clr1", nr, addr) - -#define __test_and_change_bit(nr, addr) __tns_bit_op ("not1", nr, addr) -#define test_and_change_bit(nr, addr) __tns_atomic_bit_op ("not1", nr, addr) - - -#define __const_test_bit(nr, addr) \ - ({ int __test_bit_res; \ - __asm__ __volatile__ ("tst1 (%1 - 0x123), %2; setf nz, %0" \ - : "=r" (__test_bit_res) \ - : "g" (((nr) & 0x7) + 0x123), \ - "m" (*((const char *)(addr) + ((nr) >> 3)))); \ - __test_bit_res; \ - }) -static inline int __test_bit (int nr, const void *addr) -{ - int res; - __asm__ __volatile__ ("tst1 %1, [%2]; setf nz, %0" - : "=r" (res) - : "r" (nr & 0x7), "r" (addr + (nr >> 3))); - return res; -} -#define test_bit(nr,addr) \ - ((__builtin_constant_p (nr) && (unsigned)(nr) <= 0x7FFFF) \ - ? __const_test_bit ((nr), (addr)) \ - : __test_bit ((nr), (addr))) - - -/* clear_bit doesn't provide any barrier for the compiler. */ -#define smp_mb__before_clear_bit() barrier () -#define smp_mb__after_clear_bit() barrier () - -#include <asm-generic/bitops/ffs.h> -#include <asm-generic/bitops/fls.h> -#include <asm-generic/bitops/fls64.h> -#include <asm-generic/bitops/__ffs.h> -#include <asm-generic/bitops/find.h> -#include <asm-generic/bitops/sched.h> -#include <asm-generic/bitops/hweight.h> -#include <asm-generic/bitops/lock.h> - -#include <asm-generic/bitops/ext2-non-atomic.h> -#define ext2_set_bit_atomic(l,n,a) test_and_set_bit(n,a) -#define ext2_clear_bit_atomic(l,n,a) test_and_clear_bit(n,a) - -#include <asm-generic/bitops/minix.h> - -#endif /* __KERNEL__ */ - -#endif /* __V850_BITOPS_H__ */ |
