diff options
Diffstat (limited to 'include/qemu/cache-utils.h')
-rw-r--r-- | include/qemu/cache-utils.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/qemu/cache-utils.h b/include/qemu/cache-utils.h new file mode 100644 index 0000000..2c57f78 --- /dev/null +++ b/include/qemu/cache-utils.h @@ -0,0 +1,44 @@ +#ifndef QEMU_CACHE_UTILS_H +#define QEMU_CACHE_UTILS_H + +#if defined(_ARCH_PPC) + +#include <stdint.h> /* uintptr_t */ + +struct qemu_cache_conf { + unsigned long dcache_bsize; + unsigned long icache_bsize; +}; + +extern struct qemu_cache_conf qemu_cache_conf; + +void qemu_cache_utils_init(char **envp); + +/* mildly adjusted code from tcg-dyngen.c */ +static inline void flush_icache_range(uintptr_t start, uintptr_t 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 */ |