avr32.h File Reference

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Macros
#define	AO_HAVE_test_and_set_full
#define	AO_HAVE_compare_and_swap_full
#define	AO_T_IS_INT

Functions
AO_INLINE AO_TS_VAL_t	AO_test_and_set_full (volatile AO_TS_t *addr)
AO_INLINE int	AO_compare_and_swap_full (volatile AO_t *addr, AO_t old, AO_t new_val)

Macro Definition Documentation

AO_HAVE_compare_and_swap_full

#define AO_HAVE_compare_and_swap_full

Definition at line 67 of file avr32.h.

AO_HAVE_test_and_set_full

#define AO_HAVE_test_and_set_full

Definition at line 45 of file avr32.h.

AO_T_IS_INT

#define AO_T_IS_INT

Definition at line 71 of file avr32.h.

Function Documentation

AO_compare_and_swap_full()

AO_INLINE int AO_compare_and_swap_full	(	volatile AO_t *	addr,
		AO_t	old,
		AO_t	new_val
	)

Definition at line 49 of file avr32.h.

{
       register long ret;
 
       __asm__ __volatile__(
               "1: ssrf    5\n"
               "   ld.w    %[res], %[mem]\n"
               "   eor     %[res], %[oldval]\n"
               "   brne    2f\n"
               "   stcond  %[mem], %[newval]\n"
               "   brne    1b\n"
               "2:\n"
               : [res] "=&r"(ret), [mem] "=m"(*addr)
               : "m"(*addr), [newval] "r"(new_val), [oldval] "r"(old)
               : "cc", "memory");
 
       return (int)ret;
}

AO_test_and_set_full()

AO_INLINE AO_TS_VAL_t AO_test_and_set_full

(

volatile AO_TS_t *

addr

)

Definition at line 33 of file avr32.h.

  {
        register long ret;
 
        __asm__ __volatile__(
                "xchg %[oldval], %[mem], %[newval]"
                : [oldval] "=&r"(ret)
                : [mem] "r"(addr), [newval] "r"(1)
                : "memory");
 
        return (AO_TS_VAL_t)ret;
  }