X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;ds=sidebyside;f=lib_generic%2Fstring.c;h=181eda614993167894f9a172d81c1b713cd30e2b;hb=0088c298f0eeb90ec001f744e9959dea83dd563a;hp=d06a645017df519f0dc5e98995bc6dec44e3a5eb;hpb=8bde7f776c77b343aca29b8c7b58464d915ac245;p=u-boot

diff --git a/lib_generic/string.c b/lib_generic/string.c
index d06a645017..181eda6149 100644
--- a/lib_generic/string.c
+++ b/lib_generic/string.c
@@ -21,7 +21,7 @@
 #include <malloc.h>
 
 
-#ifndef __HAVE_ARCH_STRNICMP
+#if 0 /* not used - was: #ifndef __HAVE_ARCH_STRNICMP */
 /**
  * strnicmp - Case insensitive, length-limited string comparison
  * @s1: One string
@@ -263,7 +263,7 @@ char * strdup(const char *s)
 #ifndef __HAVE_ARCH_STRSPN
 /**
  * strspn - Calculate the length of the initial substring of @s which only
- * 	contain letters in @accept
+ *	contain letters in @accept
  * @s: The string to be searched
  * @accept: The string to search for
  */
@@ -364,6 +364,34 @@ char * strsep(char **s, const char *ct)
 }
 #endif
 
+#ifndef __HAVE_ARCH_STRSWAB
+/**
+ * strswab - swap adjacent even and odd bytes in %NUL-terminated string
+ * s: address of the string
+ *
+ * returns the address of the swapped string or NULL on error. If
+ * string length is odd, last byte is untouched.
+ */
+char *strswab(const char *s)
+{
+	char *p, *q;
+
+	if ((NULL == s) || ('\0' == *s)) {
+		return (NULL);
+	}
+
+	for (p=(char *)s, q=p+1; (*p != '\0') && (*q != '\0'); p+=2, q+=2) {
+		char  tmp;
+
+		tmp = *p;
+		*p  = *q;
+		*q  = tmp;
+	}
+
+	return (char *) s;
+}
+#endif
+
 #ifndef __HAVE_ARCH_MEMSET
 /**
  * memset - Fill a region of memory with the given value