[v1.05] Move sysctl from ARM-specific to common (#251)

src/common/sysctl.c

@@ -0,0 +1,25 @@
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "global.h"
+#include "cpu.h"
+
+uint32_t get_sys_info_by_name(char* name) {
+  size_t size = 0;
+  uint32_t ret = 0;
+
+  if (sysctlbyname(name, NULL, &size, NULL, 0) != 0) {
+    printWarn("sysctlbyname(%s) failed: %s", name, strerror(errno));
+  }
+  else if (size == sizeof(uint32_t)) {
+    sysctlbyname(name, &ret, &size, NULL, 0);
+  }
+  else {
+    printWarn("sysctl does not support non-integer lookup for '%s'", name);
+  }
+
+  return ret;
+}