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1 | #include "cache-utils.h" | |
2 | ||
3 | #if defined(_ARCH_PPC) | |
4 | struct qemu_cache_conf qemu_cache_conf = { | |
5 | .dcache_bsize = 16, | |
6 | .icache_bsize = 16 | |
7 | }; | |
8 | ||
9 | #if defined _AIX | |
10 | #include <sys/systemcfg.h> | |
11 | ||
12 | static void ppc_init_cacheline_sizes(void) | |
13 | { | |
14 | qemu_cache_conf.icache_bsize = _system_configuration.icache_line; | |
15 | qemu_cache_conf.dcache_bsize = _system_configuration.dcache_line; | |
16 | } | |
17 | ||
18 | #elif defined __linux__ | |
19 | ||
20 | #define QEMU_AT_NULL 0 | |
21 | #define QEMU_AT_DCACHEBSIZE 19 | |
22 | #define QEMU_AT_ICACHEBSIZE 20 | |
23 | ||
24 | static void ppc_init_cacheline_sizes(char **envp) | |
25 | { | |
26 | unsigned long *auxv; | |
27 | ||
28 | while (*envp++); | |
29 | ||
30 | for (auxv = (unsigned long *) envp; *auxv != QEMU_AT_NULL; auxv += 2) { | |
31 | switch (*auxv) { | |
32 | case QEMU_AT_DCACHEBSIZE: qemu_cache_conf.dcache_bsize = auxv[1]; break; | |
33 | case QEMU_AT_ICACHEBSIZE: qemu_cache_conf.icache_bsize = auxv[1]; break; | |
34 | default: break; | |
35 | } | |
36 | } | |
37 | } | |
38 | ||
39 | #elif defined __APPLE__ | |
40 | #include <stdio.h> | |
41 | #include <sys/types.h> | |
42 | #include <sys/sysctl.h> | |
43 | ||
44 | static void ppc_init_cacheline_sizes(void) | |
45 | { | |
46 | size_t len; | |
47 | unsigned cacheline; | |
48 | int name[2] = { CTL_HW, HW_CACHELINE }; | |
49 | ||
50 | len = sizeof(cacheline); | |
51 | if (sysctl(name, 2, &cacheline, &len, NULL, 0)) { | |
52 | perror("sysctl CTL_HW HW_CACHELINE failed"); | |
53 | } else { | |
54 | qemu_cache_conf.dcache_bsize = cacheline; | |
55 | qemu_cache_conf.icache_bsize = cacheline; | |
56 | } | |
57 | } | |
58 | #endif | |
59 | ||
60 | #ifdef __linux__ | |
61 | void qemu_cache_utils_init(char **envp) | |
62 | { | |
63 | ppc_init_cacheline_sizes(envp); | |
64 | } | |
65 | #else | |
66 | void qemu_cache_utils_init(char **envp) | |
67 | { | |
68 | (void) envp; | |
69 | ppc_init_cacheline_sizes(); | |
70 | } | |
71 | #endif | |
72 | ||
73 | #endif /* _ARCH_PPC */ |