libutils: add kernel word size related CTZ macro

Add kernel word size related macros CxZ_WORD() for ctz and clz builtin
func. And also add CxZLL() macro for 64bits data size.

Signed-off-by: colorglass <[email protected]>

libutils/include/utils/builtin.h

@@ -14,6 +14,8 @@
 #define CLZ(x) __builtin_clz(x)
 #define CTZL(x) __builtin_ctzl(x)
 #define CLZL(x) __builtin_clzl(x)
+#define CTZLL(x) __builtin_ctzll(x)
+#define CLZLL(x) __builtin_clzll(x)
 #define FFS(x) __builtin_ffs(x)
 #define FFSL(x) __builtin_ffsl(x)
 #define OFFSETOF(type, member) __builtin_offsetof(type, member)
@@ -29,6 +31,18 @@
 #define BSWAP_WORD(x) __builtin_bswap64(x)
 #endif
 
+#if CONFIG_WORD_SIZE == 32
+#define CTZ_WORD(x) CTZL(x)
+#elif CONFIG_WORD_SIZE == 64
+#define CTZ_WORD(x) CTZLL(x)
+#endif
+
+#if CONFIG_WORD_SIZE == 32
+#define CLZ_WORD(x) CLZL(x)
+#elif CONFIG_WORD_SIZE == 64
+#define CLZ_WORD(x) CLZLL(x)
+#endif
+
 /* The UNREACHABLE macro is used in some code that is imported to Isabelle via
  * the C-to-Simpl parser. This parser can handle calls to uninterpreted
  * functions, but it needs to see a function declaration before the call site,