1 #ifndef QEMU_CACHE_UTILS_H

     2 #define QEMU_CACHE_UTILS_H

     3 

     4 #ifdef __powerpc__

     5 struct qemu_cache_conf {

     6     unsigned long dcache_bsize;

     7     unsigned long icache_bsize;

     8 };

     9 

    10 extern struct qemu_cache_conf qemu_cache_conf;

    11 

    12 extern void qemu_cache_utils_init(char **envp);

    13 

    14 /* mildly adjusted code from tcg-dyngen.c */

    15 static inline void flush_icache_range(unsigned long start, unsigned long stop)

    16 {

    17     unsigned long p, start1, stop1;

    18     unsigned long dsize = qemu_cache_conf.dcache_bsize;

    19     unsigned long isize = qemu_cache_conf.icache_bsize;

    20 

    21     start1 = start & ~(dsize - 1);

    22     stop1 = (stop + dsize - 1) & ~(dsize - 1);

    23     for (p = start1; p < stop1; p += dsize) {

    24         asm volatile ("dcbst 0,%0" : : "r"(p) : "memory");

    25     }

    26     asm volatile ("sync" : : : "memory");

    27 

    28     start &= start & ~(isize - 1);

    29     stop1 = (stop + isize - 1) & ~(isize - 1);

    30     for (p = start1; p < stop1; p += isize) {

    31         asm volatile ("icbi 0,%0" : : "r"(p) : "memory");

    32     }

    33     asm volatile ("sync" : : : "memory");

    34     asm volatile ("isync" : : : "memory");

    35 }

    36 

    37 #else

    38 #define qemu_cache_utils_init(envp) do { (void) (envp); } while (0)

    39 #endif

    40 

    41 #endif /* QEMU_CACHE_UTILS_H */