move some code to utils.[ch]

1 files changed, 51 insertions, 0 deletions

diff --git a/utils.h b/utils.h
new file mode 100644
index 0000000..09df8c6
--- /dev/null
+++ b/utils.h
@@ -0,0 +1,51 @@
+#ifndef __NETIFD_UTILS_H
+#define __NETIFD_UTILS_H
+
+#include <libubox/list.h>
+
+#ifdef DEBUG
+#define DPRINTF(format, ...) fprintf(stderr, "%s(%d): " format, __func__, __LINE__, ## __VA_ARGS__)
+#else
+#define DPRINTF(format, ...) no_debug(format, ## __VA_ARGS__)
+#endif
+
+static inline void no_debug(const char *fmt, ...)
+{
+}
+
+#define __init __attribute__((constructor))
+
+#ifdef __linux__
+static inline int fls(int x)
+{
+    int r = 32;
+
+    if (!x)
+        return 0;
+    if (!(x & 0xffff0000u)) {
+        x <<= 16;
+        r -= 16;
+    }
+    if (!(x & 0xff000000u)) {
+        x <<= 8;
+        r -= 8;
+    }
+    if (!(x & 0xf0000000u)) {
+        x <<= 4;
+        r -= 4;
+    }
+    if (!(x & 0xc0000000u)) {
+        x <<= 2;
+        r -= 2;
+    }
+    if (!(x & 0x80000000u)) {
+        x <<= 1;
+        r -= 1;
+    }
+    return r;
+}
+#endif
+
+int avl_strcmp(const void *k1, const void *k2, void *ptr);
+
+#endif