42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
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#ifndef QEMU_CACHE_UTILS_H
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#define QEMU_CACHE_UTILS_H
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#ifdef __powerpc__
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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 */
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