Archipelago » qemu

#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 */