69 	rt_uint32_t value;  in cache_enable()  local
73 		mrc p15, 0, value, c1, c0, 0  in cache_enable()
74 		orr value, value, bit  in cache_enable()
75 		mcr p15, 0, value, c1, c0, 0  in cache_enable()
81 	rt_uint32_t value;  in cache_disable()  local
85 		mrc p15, 0, value, c1, c0, 0  in cache_disable()
86 		bic value, value, bit  in cache_disable()
87 		mcr p15, 0, value, c1, c0, 0  in cache_disable()
181  * in value and return the index of that bit.
183  * Bits are numbered starting at 1 (the least significant bit).  A return value of 
186  * @return return the index of the first bit set. If value is 0, then this function 
190 int __rt_ffs(int value)  in __rt_ffs()  argument
194 	if (value == 0)  in __rt_ffs()
195 		return value;  in __rt_ffs()
199 		rsb x, value, #0  in __rt_ffs()
200 		and x, x, value  in __rt_ffs()
208 int __rt_ffs(int value)  in __rt_ffs()  argument
210 	if (value == 0)  in __rt_ffs()
211 		return value;  in __rt_ffs()
219 int __rt_ffs(int value)  in __rt_ffs()  argument
221 	if (value == 0)  in __rt_ffs()
222 		return value;  in __rt_ffs()
224 	value &= (-value);  in __rt_ffs()
225 	asm ("clz %0, %1": "=r"(value) :"r"(value));  in __rt_ffs()
227 	return (32 - value);  in __rt_ffs()