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Rev 3022 Rev 4055
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#define read_barrier()      \
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#define read_barrier()      \
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    asm volatile ("membar #LoadLoad\n" ::: "memory")
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    asm volatile ("membar #LoadLoad\n" ::: "memory")
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#define write_barrier()     \
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#define write_barrier()     \
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    asm volatile ("membar #StoreStore\n" ::: "memory")
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    asm volatile ("membar #StoreStore\n" ::: "memory")
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#define flush(a)        \
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    asm volatile ("flush %0\n" :: "r" ((a)) : "memory")
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/** Flush Instruction Memory instruction. */
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/** Flush Instruction pipeline. */
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static inline void flush(void)
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static inline void flush_pipeline(void)
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{
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{
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    /*
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    /*
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     * The FLUSH instruction takes address parameter.
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     * The FLUSH instruction takes address parameter.
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     * As such, it may trap if the address is not found in DTLB.
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     * As such, it may trap if the address is not found in DTLB.
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     *
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     *
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static inline void membar(void)
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static inline void membar(void)
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{
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{
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    asm volatile ("membar #Sync\n");
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    asm volatile ("membar #Sync\n");
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}
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}
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#if defined (US)
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#define smc_coherence(a)    \
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{               \
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    write_barrier();    \
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    flush((a));     \
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}
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#define FLUSH_INVAL_MIN     4
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#define smc_coherence_block(a, l)           \
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{                           \
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    unsigned long i;                \
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    write_barrier();                \
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    for (i = 0; i < (l); i += FLUSH_INVAL_MIN)  \
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        flush((void *)(a) + i);         \
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}
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#elif defined (US3)
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#define smc_coherence(a)    \
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{               \
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    write_barrier();    \
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    flush_pipeline();   \
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}
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#define smc_coherence_block(a, l)   \
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{                   \
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    write_barrier();        \
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    flush_pipeline();       \
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}
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#endif  /* defined(US3) */
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#endif
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#endif
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/** @}
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/** @}
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 */
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 */