1 files changed, 97 insertions, 0 deletions
diff --git a/util/cache-utils.c b/util/cache-utils.c
new file mode 100644
index 0000000000..b94013a8cb
--- /dev/null
+++ b/util/cache-utils.c
@@ -0,0 +1,97 @@
+#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 */