diff options
Diffstat (limited to 'cache-utils.h')
-rw-r--r-- | cache-utils.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/cache-utils.h b/cache-utils.h new file mode 100644 index 0000000..0598b96 --- /dev/null +++ b/cache-utils.h @@ -0,0 +1,41 @@ +#ifndef QEMU_CACHE_UTILS_H +#define QEMU_CACHE_UTILS_H + +#ifdef __powerpc__ +struct qemu_cache_conf { + unsigned long dcache_bsize; + unsigned long icache_bsize; +}; + +extern struct qemu_cache_conf qemu_cache_conf; + +extern void qemu_cache_utils_init(char **envp); + +/* mildly adjusted code from tcg-dyngen.c */ +static inline void flush_icache_range(unsigned long start, unsigned long stop) +{ + unsigned long p, start1, stop1; + unsigned long dsize = qemu_cache_conf.dcache_bsize; + unsigned long isize = qemu_cache_conf.icache_bsize; + + start1 = start & ~(dsize - 1); + stop1 = (stop + dsize - 1) & ~(dsize - 1); + for (p = start1; p < stop1; p += dsize) { + asm volatile ("dcbst 0,%0" : : "r"(p) : "memory"); + } + asm volatile ("sync" : : : "memory"); + + start &= start & ~(isize - 1); + stop1 = (stop + isize - 1) & ~(isize - 1); + for (p = start1; p < stop1; p += isize) { + asm volatile ("icbi 0,%0" : : "r"(p) : "memory"); + } + asm volatile ("sync" : : : "memory"); + asm volatile ("isync" : : : "memory"); +} + +#else +#define qemu_cache_utils_init(envp) do { (void) (envp); } while (0) +#endif + +#endif /* QEMU_CACHE_UTILS_H */ |