1#include "cache-utils.h"
2
3#if defined(_ARCH_PPC)
4struct 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
12static 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
24static 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
44static 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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
61#include <errno.h>
62#include <stdio.h>
63#include <stdlib.h>
64#include <string.h>
65#include <sys/types.h>
66#include <sys/sysctl.h>
67
68static void ppc_init_cacheline_sizes(void)
69{
70    size_t len = 4;
71    unsigned cacheline;
72
73    if (sysctlbyname ("machdep.cacheline_size", &cacheline, &len, NULL, 0)) {
74        fprintf(stderr, "sysctlbyname machdep.cacheline_size failed: %s\n",
75                strerror(errno));
76        exit(1);
77    }
78
79    qemu_cache_conf.dcache_bsize = cacheline;
80    qemu_cache_conf.icache_bsize = cacheline;
81}
82#endif
83
84#ifdef __linux__
85void qemu_cache_utils_init(char **envp)
86{
87    ppc_init_cacheline_sizes(envp);
88}
89#else
90void qemu_cache_utils_init(char **envp)
91{
92    (void) envp;
93    ppc_init_cacheline_sizes();
94}
95#endif
96
97#endif /* _ARCH_PPC */
98