4 * Copyright (C) 2013 Chanho Min <chanho.min@lge.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 * The functions in this file aren't called directly, but are required by
10 * GCC builtins such as __builtin_ctz, and therefore they can't be removed
11 * despite appearing unreferenced in kernel source.
13 * __c[lt]z[sd]i2 can be overridden by linking arch-specific versions.
16 #include <linux/export.h>
17 #include <linux/kernel.h>
19 int __weak __ctzsi2(int val);
20 int __weak __ctzsi2(int val)
24 EXPORT_SYMBOL(__ctzsi2);
26 int __weak __clzsi2(int val);
27 int __weak __clzsi2(int val)
31 EXPORT_SYMBOL(__clzsi2);
33 int __weak __clzdi2(u64 val);
34 int __weak __clzdi2(u64 val)
36 return 64 - fls64(val);
38 EXPORT_SYMBOL(__clzdi2);
40 int __weak __ctzdi2(u64 val);
41 int __weak __ctzdi2(u64 val)
45 EXPORT_SYMBOL(__ctzdi2);