| 1 | #ifndef QEMU_CACHE_UTILS_H
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| 2 | #define QEMU_CACHE_UTILS_H
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| 3 |
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| 4 | #if defined(_ARCH_PPC)
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| 5 | struct qemu_cache_conf {
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| 6 | unsigned long dcache_bsize;
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| 7 | unsigned long icache_bsize;
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| 8 | };
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| 9 |
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| 10 | extern struct qemu_cache_conf qemu_cache_conf;
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| 11 |
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| 12 | extern void qemu_cache_utils_init(char **envp);
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| 13 |
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| 14 | /* mildly adjusted code from tcg-dyngen.c */
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| 15 | static inline void flush_icache_range(unsigned long start, unsigned long stop)
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| 16 | {
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| 17 | unsigned long p, start1, stop1;
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| 18 | unsigned long dsize = qemu_cache_conf.dcache_bsize;
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| 19 | unsigned long isize = qemu_cache_conf.icache_bsize;
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| 20 |
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| 21 | start1 = start & ~(dsize - 1);
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| 22 | stop1 = (stop + dsize - 1) & ~(dsize - 1);
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| 23 | for (p = start1; p < stop1; p += dsize) {
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| 24 | asm volatile ("dcbst 0,%0" : : "r"(p) : "memory");
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| 25 | }
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| 26 | asm volatile ("sync" : : : "memory");
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| 27 |
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| 28 | start &= start & ~(isize - 1);
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| 29 | stop1 = (stop + isize - 1) & ~(isize - 1);
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| 30 | for (p = start1; p < stop1; p += isize) {
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| 31 | asm volatile ("icbi 0,%0" : : "r"(p) : "memory");
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| 32 | }
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| 33 | asm volatile ("sync" : : : "memory");
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| 34 | asm volatile ("isync" : : : "memory");
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| 35 | }
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| 36 |
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| 37 | #else
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| 38 | #define qemu_cache_utils_init(envp) do { (void) (envp); } while (0)
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| 39 | #endif
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| 40 |
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| 41 | #endif /* QEMU_CACHE_UTILS_H */
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