File:  [Qemu by Fabrice Bellard] / qemu / cache-utils.h
Revision 1.1.1.2 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 18:33:48 2018 UTC (3 years, 1 month ago) by root
Branches: qemu, MAIN
CVS tags: qemu1001, qemu1000, qemu0151, qemu0150, qemu0141, qemu0140, HEAD
qemu 0.14.0

    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 */

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