6  * Copyright (c) 1994-1997, 99, 2000, 06, 07 Ralf Baechle (ralf@linux-mips.org)
16  * __mips_set_bit - Atomically set a bit in memory.  This is called by
25 	unsigned long mask;  in __mips_set_bit()  local
26 	unsigned long flags;  in __mips_set_bit()  local
28 	mask = 1UL << bit;  in __mips_set_bit()
29 	raw_local_irq_save(flags);  in __mips_set_bit()
30 	*a |= mask;  in __mips_set_bit()
31 	raw_local_irq_restore(flags);  in __mips_set_bit()
37  * __mips_clear_bit - Clears a bit in memory.  This is called by clear_bit() if
46 	unsigned long mask;  in __mips_clear_bit()  local
47 	unsigned long flags;  in __mips_clear_bit()  local
49 	mask = 1UL << bit;  in __mips_clear_bit()
50 	raw_local_irq_save(flags);  in __mips_clear_bit()
51 	*a &= ~mask;  in __mips_clear_bit()
52 	raw_local_irq_restore(flags);  in __mips_clear_bit()
58  * __mips_change_bit - Toggle a bit in memory.	This is called by change_bit()
67 	unsigned long mask;  in __mips_change_bit()  local
68 	unsigned long flags;  in __mips_change_bit()  local
70 	mask = 1UL << bit;  in __mips_change_bit()
71 	raw_local_irq_save(flags);  in __mips_change_bit()
72 	*a ^= mask;  in __mips_change_bit()
73 	raw_local_irq_restore(flags);  in __mips_change_bit()
79  * __mips_test_and_set_bit_lock - Set a bit and return its old value.  This is
89 	unsigned long mask;  in __mips_test_and_set_bit_lock()  local
90 	unsigned long flags;  in __mips_test_and_set_bit_lock()  local
93 	mask = 1UL << bit;  in __mips_test_and_set_bit_lock()
94 	raw_local_irq_save(flags);  in __mips_test_and_set_bit_lock()
95 	res = (mask & *a) != 0;  in __mips_test_and_set_bit_lock()
96 	*a |= mask;  in __mips_test_and_set_bit_lock()
97 	raw_local_irq_restore(flags);  in __mips_test_and_set_bit_lock()
104  * __mips_test_and_clear_bit - Clear a bit and return its old value.  This is
113 	unsigned long mask;  in __mips_test_and_clear_bit()  local
114 	unsigned long flags;  in __mips_test_and_clear_bit()  local
117 	mask = 1UL << bit;  in __mips_test_and_clear_bit()
118 	raw_local_irq_save(flags);  in __mips_test_and_clear_bit()
119 	res = (mask & *a) != 0;  in __mips_test_and_clear_bit()
120 	*a &= ~mask;  in __mips_test_and_clear_bit()
121 	raw_local_irq_restore(flags);  in __mips_test_and_clear_bit()
128  * __mips_test_and_change_bit - Change a bit and return its old value.	This is
137 	unsigned long mask;  in __mips_test_and_change_bit()  local
138 	unsigned long flags;  in __mips_test_and_change_bit()  local
141 	mask = 1UL << bit;  in __mips_test_and_change_bit()
142 	raw_local_irq_save(flags);  in __mips_test_and_change_bit()
143 	res = (mask & *a) != 0;  in __mips_test_and_change_bit()
144 	*a ^= mask;  in __mips_test_and_change_bit()
145 	raw_local_irq_restore(flags);  in __mips_test_and_change_bit()