root / cache-utils.h @ 91a75935
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#ifndef QEMU_CACHE_UTILS_H
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#define QEMU_CACHE_UTILS_H
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#if defined(_ARCH_PPC)
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struct qemu_cache_conf {
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unsigned long dcache_bsize; |
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unsigned long icache_bsize; |
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}; |
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extern struct qemu_cache_conf qemu_cache_conf; |
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extern void qemu_cache_utils_init(char **envp); |
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/* mildly adjusted code from tcg-dyngen.c */
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static inline void flush_icache_range(unsigned long start, unsigned long stop) |
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{ |
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unsigned long p, start1, stop1; |
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unsigned long dsize = qemu_cache_conf.dcache_bsize; |
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unsigned long isize = qemu_cache_conf.icache_bsize; |
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start1 = start & ~(dsize - 1);
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stop1 = (stop + dsize - 1) & ~(dsize - 1); |
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for (p = start1; p < stop1; p += dsize) {
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asm volatile ("dcbst 0,%0" : : "r"(p) : "memory"); |
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} |
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asm volatile ("sync" : : : "memory"); |
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start &= start & ~(isize - 1);
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stop1 = (stop + isize - 1) & ~(isize - 1); |
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for (p = start1; p < stop1; p += isize) {
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asm volatile ("icbi 0,%0" : : "r"(p) : "memory"); |
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} |
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asm volatile ("sync" : : : "memory"); |
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asm volatile ("isync" : : : "memory"); |
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} |
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#else
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#define qemu_cache_utils_init(envp) do { (void) (envp); } while (0) |
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#endif
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#endif /* QEMU_CACHE_UTILS_H */ |