config/pa/linux-atomic.c

52 __kernel_cmpxchg (int oldval, int newval, int *mem)
57   register int lws_old asm("r25") = oldval;
72   if (!lws_errno && lws_ret != oldval)
119     unsigned int mask, shift, oldval, newval;				\
126       oldval = *wordptr;						\
127       newval = ((PFX_OP ((oldval & mask) >> shift)			\
129       newval |= oldval & ~mask;						\
130       failure = __kernel_cmpxchg (oldval, newval, wordptr);		\
136 SUBWORD_SYNC_OP (add,   , +, short, 2, oldval)
137 SUBWORD_SYNC_OP (sub,   , -, short, 2, oldval)
138 SUBWORD_SYNC_OP (or,    , |, short, 2, oldval)
139 SUBWORD_SYNC_OP (and,   , &, short, 2, oldval)
140 SUBWORD_SYNC_OP (xor,   , ^, short, 2, oldval)
141 SUBWORD_SYNC_OP (nand, ~, &, short, 2, oldval)
143 SUBWORD_SYNC_OP (add,   , +, char, 1, oldval)
144 SUBWORD_SYNC_OP (sub,   , -, char, 1, oldval)
145 SUBWORD_SYNC_OP (or,    , |, char, 1, oldval)
146 SUBWORD_SYNC_OP (and,   , &, char, 1, oldval)
147 SUBWORD_SYNC_OP (xor,   , ^, char, 1, oldval)
148 SUBWORD_SYNC_OP (nand, ~, &, char, 1, oldval)
186 __sync_val_compare_and_swap_4 (int *ptr, int oldval, int newval)
194       if (oldval != actual_oldval)
200 	return oldval;
206   __sync_val_compare_and_swap_##WIDTH (TYPE *ptr, TYPE oldval,		\
219 	if (((actual_oldval & mask) >> shift) != (unsigned int) oldval)	\
229 	  return oldval;						\
239 __sync_bool_compare_and_swap_4 (int *ptr, int oldval, int newval)
241   int failure = __kernel_cmpxchg (oldval, newval, ptr);
247   __sync_bool_compare_and_swap_##WIDTH (TYPE *ptr, TYPE oldval,		\
251       = __sync_val_compare_and_swap_##WIDTH (ptr, oldval, newval);	\
252     return (oldval == actual_oldval);					\
261   int failure, oldval;
264     oldval = *ptr;
265     failure = __kernel_cmpxchg (oldval, val, ptr);
268   return oldval;
276     unsigned int oldval, newval, shift, mask;				\
283       oldval = *wordptr;						\
284       newval = (oldval & ~mask)						\
286       failure = __kernel_cmpxchg (oldval, newval, wordptr);		\
289     return (oldval & mask) >> shift;					\