1 #ifndef QEMU_CACHE_UTILS_H 2 #define QEMU_CACHE_UTILS_H 3 4 #if defined(_ARCH_PPC) 5 struct qemu_cache_conf { 6 unsigned long dcache_bsize; 7 unsigned long icache_bsize; 8 }; 9 10 extern struct qemu_cache_conf qemu_cache_conf; 11 12 void qemu_cache_utils_init(char **envp); 13 14 /* mildly adjusted code from tcg-dyngen.c */ 15 static inline void flush_icache_range(unsigned long start, unsigned long stop) 16 { 17 unsigned long p, start1, stop1; 18 unsigned long dsize = qemu_cache_conf.dcache_bsize; 19 unsigned long isize = qemu_cache_conf.icache_bsize; 20 21 start1 = start & ~(dsize - 1); 22 stop1 = (stop + dsize - 1) & ~(dsize - 1); 23 for (p = start1; p < stop1; p += dsize) { 24 asm volatile ("dcbst 0,%0" : : "r"(p) : "memory"); 25 } 26 asm volatile ("sync" : : : "memory"); 27 28 start &= start & ~(isize - 1); 29 stop1 = (stop + isize - 1) & ~(isize - 1); 30 for (p = start1; p < stop1; p += isize) { 31 asm volatile ("icbi 0,%0" : : "r"(p) : "memory"); 32 } 33 asm volatile ("sync" : : : "memory"); 34 asm volatile ("isync" : : : "memory"); 35 } 36 37 #else 38 #define qemu_cache_utils_init(envp) do { (void) (envp); } while (0) 39 #endif 40 41 #endif /* QEMU_CACHE_UTILS_H */ 42
