| /* |
| * Copyright (C) 2001 - 2012 Tensilica Inc. |
| * Copyright (C) 2014 - 2016 Cadence Design Systems Inc. |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #ifndef _XTENSA_BITOPS_H |
| #define _XTENSA_BITOPS_H |
| |
| #include <asm/system.h> |
| #include <asm-generic/bitops/fls.h> |
| #include <asm-generic/bitops/__fls.h> |
| #include <asm-generic/bitops/fls64.h> |
| #include <asm-generic/bitops/__ffs.h> |
| |
| static inline int test_bit(int nr, const void *addr) |
| { |
| return ((unsigned char *)addr)[nr >> 3] & (1u << (nr & 7)); |
| } |
| |
| static inline int test_and_set_bit(int nr, volatile void *addr) |
| { |
| unsigned long flags; |
| unsigned char tmp; |
| unsigned char mask = 1u << (nr & 7); |
| |
| local_irq_save(flags); |
| tmp = ((unsigned char *)addr)[nr >> 3]; |
| ((unsigned char *)addr)[nr >> 3] |= mask; |
| local_irq_restore(flags); |
| |
| return tmp & mask; |
| } |
| |
| #endif /* _XTENSA_BITOPS_H */ |
