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#include "qemu/cache-utils.h"
#if defined(_ARCH_PPC)
struct qemu_cache_conf qemu_cache_conf = {
.dcache_bsize = 16,
.icache_bsize = 16
};
#if defined _AIX
#include <sys/systemcfg.h>
static void ppc_init_cacheline_sizes(void)
{
qemu_cache_conf.icache_bsize = _system_configuration.icache_line;
qemu_cache_conf.dcache_bsize = _system_configuration.dcache_line;
}
#elif defined __linux__
#define QEMU_AT_NULL 0
#define QEMU_AT_DCACHEBSIZE 19
#define QEMU_AT_ICACHEBSIZE 20
static void ppc_init_cacheline_sizes(char **envp)
{
unsigned long *auxv;
while (*envp++);
for (auxv = (unsigned long *) envp; *auxv != QEMU_AT_NULL; auxv += 2) {
switch (*auxv) {
case QEMU_AT_DCACHEBSIZE: qemu_cache_conf.dcache_bsize = auxv[1]; break;
case QEMU_AT_ICACHEBSIZE: qemu_cache_conf.icache_bsize = auxv[1]; break;
default: break;
}
}
}
#elif defined __APPLE__
#include <stdio.h>
#include <sys/types.h>
#include <sys/sysctl.h>
static void ppc_init_cacheline_sizes(void)
{
size_t len;
unsigned cacheline;
int name[2] = { CTL_HW, HW_CACHELINE };
len = sizeof(cacheline);
if (sysctl(name, 2, &cacheline, &len, NULL, 0)) {
perror("sysctl CTL_HW HW_CACHELINE failed");
} else {
qemu_cache_conf.dcache_bsize = cacheline;
qemu_cache_conf.icache_bsize = cacheline;
}
}
#endif
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/sysctl.h>
static void ppc_init_cacheline_sizes(void)
{
size_t len = 4;
unsigned cacheline;
if (sysctlbyname ("machdep.cacheline_size", &cacheline, &len, NULL, 0)) {
fprintf(stderr, "sysctlbyname machdep.cacheline_size failed: %s\n",
strerror(errno));
exit(1);
}
qemu_cache_conf.dcache_bsize = cacheline;
qemu_cache_conf.icache_bsize = cacheline;
}
#endif
#ifdef __linux__
void qemu_cache_utils_init(char **envp)
{
ppc_init_cacheline_sizes(envp);
}
#else
void qemu_cache_utils_init(char **envp)
{
(void) envp;
ppc_init_cacheline_sizes();
}
#endif
#endif /* _ARCH_PPC */
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