1#ifndef QEMU_CACHE_UTILS_H
2#define QEMU_CACHE_UTILS_H
3
4#if defined(_ARCH_PPC)
5
6#include <stdint.h> /* uintptr_t */
7
8struct qemu_cache_conf {
9    unsigned long dcache_bsize;
10    unsigned long icache_bsize;
11};
12
13extern struct qemu_cache_conf qemu_cache_conf;
14
15void qemu_cache_utils_init(void);
16
17/* mildly adjusted code from tcg-dyngen.c */
18static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
19{
20    unsigned long p, start1, stop1;
21    unsigned long dsize = qemu_cache_conf.dcache_bsize;
22    unsigned long isize = qemu_cache_conf.icache_bsize;
23
24    start1 = start & ~(dsize - 1);
25    stop1 = (stop + dsize - 1) & ~(dsize - 1);
26    for (p = start1; p < stop1; p += dsize) {
27        asm volatile ("dcbst 0,%0" : : "r"(p) : "memory");
28    }
29    asm volatile ("sync" : : : "memory");
30
31    start &= start & ~(isize - 1);
32    stop1 = (stop + isize - 1) & ~(isize - 1);
33    for (p = start1; p < stop1; p += isize) {
34        asm volatile ("icbi 0,%0" : : "r"(p) : "memory");
35    }
36    asm volatile ("sync" : : : "memory");
37    asm volatile ("isync" : : : "memory");
38}
39
40#else
41#define qemu_cache_utils_init() do { } while (0)
42#endif
43
44#endif /* QEMU_CACHE_UTILS_H */
45