cache-utils.h

   1 #ifndef QEMU_CACHE_UTILS_H
   2 #define QEMU_CACHE_UTILS_H
   3
   4 #include "config-host.h"
   5
   6 #if defined HOST_PPC || defined HOST_PPC64
   7 struct qemu_cache_conf {
   8     unsigned long dcache_bsize;
   9     unsigned long icache_bsize;
  10 };
  11
  12 extern struct qemu_cache_conf qemu_cache_conf;
  13
  14 extern void qemu_cache_utils_init(char **envp);
  15
  16 /* mildly adjusted code from tcg-dyngen.c */
  17 static inline void flush_icache_range(unsigned long start, unsigned long stop)
  18 {
  19     unsigned long p, start1, stop1;
  20     unsigned long dsize = qemu_cache_conf.dcache_bsize;
  21     unsigned long isize = qemu_cache_conf.icache_bsize;
  22
  23     start1 = start & ~(dsize - 1);
  24     stop1 = (stop + dsize - 1) & ~(dsize - 1);
  25     for (p = start1; p < stop1; p += dsize) {
  26         asm volatile ("dcbst 0,%0" : : "r"(p) : "memory");
  27     }
  28     asm volatile ("sync" : : : "memory");
  29
  30     start &= start & ~(isize - 1);
  31     stop1 = (stop + isize - 1) & ~(isize - 1);
  32     for (p = start1; p < stop1; p += isize) {
  33         asm volatile ("icbi 0,%0" : : "r"(p) : "memory");
  34     }
  35     asm volatile ("sync" : : : "memory");
  36     asm volatile ("isync" : : : "memory");
  37 }
  38
  39 #else
  40 #define qemu_cache_utils_init(envp) do { (void) (envp); } while (0)
  41 #endif
  42
  43 #endif /* QEMU_CACHE_UTILS_H */