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- #ifndef __ASM_SH_CMPXCHG_LLSC_H
- #define __ASM_SH_CMPXCHG_LLSC_H
- static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
- {
- unsigned long retval;
- unsigned long tmp;
- __asm__ __volatile__ (
- "1: \n\t"
- "movli.l @%2, %0 ! xchg_u32 \n\t"
- "mov %0, %1 \n\t"
- "mov %3, %0 \n\t"
- "movco.l %0, @%2 \n\t"
- "bf 1b \n\t"
- "synco \n\t"
- : "=&z"(tmp), "=&r" (retval)
- : "r" (m), "r" (val)
- : "t", "memory"
- );
- return retval;
- }
- static inline unsigned long
- __cmpxchg_u32(volatile u32 *m, unsigned long old, unsigned long new)
- {
- unsigned long retval;
- unsigned long tmp;
- __asm__ __volatile__ (
- "1: \n\t"
- "movli.l @%2, %0 ! __cmpxchg_u32 \n\t"
- "mov %0, %1 \n\t"
- "cmp/eq %1, %3 \n\t"
- "bf 2f \n\t"
- "mov %4, %0 \n\t"
- "2: \n\t"
- "movco.l %0, @%2 \n\t"
- "bf 1b \n\t"
- "synco \n\t"
- : "=&z" (tmp), "=&r" (retval)
- : "r" (m), "r" (old), "r" (new)
- : "t", "memory"
- );
- return retval;
- }
- #include <asm/cmpxchg-xchg.h>
- #endif /* __ASM_SH_CMPXCHG_LLSC_H */
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