X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=lib%2Fstring.c;h=29c2ca7ef6b12688ccfec0c4ec8451ad47f49e1f;hb=8ad59c9a7bef49a18078888ad8eba8e87737c3b2;hp=2c4f0ec9a11f8e7219b9c5d40659616bf4bc6aaf;hpb=1902692aa0b2dcbb9351172be03c57d1e82447e4;p=u-boot

diff --git a/lib/string.c b/lib/string.c
index 2c4f0ec9a1..29c2ca7ef6 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -21,14 +21,13 @@
 #include <malloc.h>
 
 
-#if 0 /* not used - was: #ifndef __HAVE_ARCH_STRNICMP */
 /**
- * strnicmp - Case insensitive, length-limited string comparison
+ * strncasecmp - Case insensitive, length-limited string comparison
  * @s1: One string
  * @s2: The other string
  * @len: the maximum number of characters to compare
  */
-int strnicmp(const char *s1, const char *s2, size_t len)
+int strncasecmp(const char *s1, const char *s2, size_t len)
 {
 	/* Yes, Virginia, it had better be unsigned */
 	unsigned char c1, c2;
@@ -52,7 +51,16 @@ int strnicmp(const char *s1, const char *s2, size_t len)
 	}
 	return (int)c1 - (int)c2;
 }
-#endif
+
+/**
+ * strcasecmp - Case insensitive string comparison
+ * @s1: One string
+ * @s2: The other string
+ */
+int strcasecmp(const char *s1, const char *s2)
+{
+	return strncasecmp(s1, s2, -1U);
+}
 
 char * ___strtok;
 
@@ -609,3 +617,61 @@ void *memchr(const void *s, int c, size_t n)
 }
 
 #endif
+#ifndef __HAVE_ARCH_MEMCHR_INV
+static void *check_bytes8(const u8 *start, u8 value, unsigned int bytes)
+{
+	while (bytes) {
+		if (*start != value)
+			return (void *)start;
+		start++;
+		bytes--;
+	}
+	return NULL;
+}
+/**
+ * memchr_inv - Find an unmatching character in an area of memory.
+ * @start: The memory area
+ * @c: Find a character other than c
+ * @bytes: The size of the area.
+ *
+ * returns the address of the first character other than @c, or %NULL
+ * if the whole buffer contains just @c.
+ */
+void *memchr_inv(const void *start, int c, size_t bytes)
+{
+	u8 value = c;
+	u64 value64;
+	unsigned int words, prefix;
+
+	if (bytes <= 16)
+		return check_bytes8(start, value, bytes);
+
+	value64 = value;
+	value64 |= value64 << 8;
+	value64 |= value64 << 16;
+	value64 |= value64 << 32;
+
+	prefix = (unsigned long)start % 8;
+	if (prefix) {
+		u8 *r;
+
+		prefix = 8 - prefix;
+		r = check_bytes8(start, value, prefix);
+		if (r)
+			return r;
+		start += prefix;
+		bytes -= prefix;
+	}
+
+	words = bytes / 8;
+
+	while (words) {
+		if (*(u64 *)start != value64)
+			return check_bytes8(start, value, 8);
+		start += 8;
+		words--;
+	}
+
+	return check_bytes8(start, value, bytes % 8);
+}
+#endif