diff options
| -rw-r--r-- | include/asm-avr32/system.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/include/asm-avr32/system.h b/include/asm-avr32/system.h index a8236ba..dc2d527 100644 --- a/include/asm-avr32/system.h +++ b/include/asm-avr32/system.h @@ -73,11 +73,16 @@ extern struct task_struct *__switch_to(struct task_struct *, extern void __xchg_called_with_bad_pointer(void); -#ifdef __CHECKER__ -extern unsigned long __builtin_xchg(void *ptr, unsigned long x); -#endif +static inline unsigned long xchg_u32(u32 val, volatile u32 *m) +{ + u32 ret; -#define xchg_u32(val, m) __builtin_xchg((void *)m, val) + asm volatile("xchg %[ret], %[m], %[val]" + : [ret] "=&r"(ret), "=m"(*m) + : "m"(*m), [m] "r"(m), [val] "r"(val) + : "memory"); + return ret; +} static inline unsigned long __xchg(unsigned long x, volatile void *ptr, |