Merge git://git.denx.de/u-boot-rockchip

[people/ms/u-boot.git] / lib / string.c

diff --git a/lib/string.c b/lib/string.c
index 3a82efab6194ce394ebc57e225a17062f7e17757..c4ca944bb42c0cabcea15a3cce3aca4f6fbf9029 100644 (file)
--- a/lib/string.c
+++ b/lib/string.c
@@ -102,6 +102,31 @@ char * strncpy(char * dest,const char *src,size_t count)
 }
 #endif
 
+#ifndef __HAVE_ARCH_STRLCPY
+/**
+ * strlcpy - Copy a C-string into a sized buffer
+ * @dest: Where to copy the string to
+ * @src: Where to copy the string from
+ * @size: size of destination buffer
+ *
+ * Compatible with *BSD: the result is always a valid
+ * NUL-terminated string that fits in the buffer (unless,
+ * of course, the buffer size is zero). It does not pad
+ * out the result like strncpy() does.
+ */
+size_t strlcpy(char *dest, const char *src, size_t size)
+{
+       size_t ret = strlen(src);
+
+       if (size) {
+               size_t len = (ret >= size) ? size - 1 : ret;
+               memcpy(dest, src, len);
+               dest[len] = '\0';
+       }
+       return ret;
+}
+#endif
+
 #ifndef __HAVE_ARCH_STRCAT
 /**
  * strcat - Append one %NUL-terminated string to another
@@ -205,6 +230,14 @@ char * strchr(const char * s, int c)
 }
 #endif
 
+const char *strchrnul(const char *s, int c)
+{
+       for (; *s != (char)c; ++s)
+               if (*s == '\0')
+                       break;
+       return s;
+}
+
 #ifndef __HAVE_ARCH_STRRCHR
 /**
  * strrchr - Find the last occurrence of a character in a string
@@ -253,6 +286,30 @@ size_t strnlen(const char * s, size_t count)
 }
 #endif
 
+#ifndef __HAVE_ARCH_STRCSPN
+/**
+ * strcspn - Calculate the length of the initial substring of @s which does
+ * not contain letters in @reject
+ * @s: The string to be searched
+ * @reject: The string to avoid
+ */
+size_t strcspn(const char *s, const char *reject)
+{
+       const char *p;
+       const char *r;
+       size_t count = 0;
+
+       for (p = s; *p != '\0'; ++p) {
+               for (r = reject; *r != '\0'; ++r) {
+                       if (*p == *r)
+                               return count;
+               }
+               ++count;
+       }
+       return count;
+}
+#endif
+
 #ifndef __HAVE_ARCH_STRDUP
 char * strdup(const char *s)
 {
@@ -412,8 +469,10 @@ char *strswab(const char *s)
 void * memset(void * s,int c,size_t count)
 {
        unsigned long *sl = (unsigned long *) s;
-       unsigned long cl = 0;
        char *s8;
+
+#if !CONFIG_IS_ENABLED(TINY_MEMSET)
+       unsigned long cl = 0;
        int i;
 
        /* do it one word at a time (32 bits or 64 bits) while possible */
@@ -427,7 +486,7 @@ void * memset(void * s,int c,size_t count)
                        count -= sizeof(*sl);
                }
        }
-       /* fill 8 bits at a time */
+#endif /* fill 8 bits at a time */
        s8 = (char *)sl;
        while (count--)
                *s8++ = c;
@@ -436,30 +495,6 @@ void * memset(void * s,int c,size_t count)
 }
 #endif
 
-#ifndef __HAVE_ARCH_BCOPY
-/**
- * bcopy - Copy one area of memory to another
- * @src: Where to copy from
- * @dest: Where to copy to
- * @count: The size of the area.
- *
- * Note that this is the same as memcpy(), with the arguments reversed.
- * memcpy() is the standard, bcopy() is a legacy BSD function.
- *
- * You should not use this function to access IO space, use memcpy_toio()
- * or memcpy_fromio() instead.
- */
-char * bcopy(const char * src, char * dest, int count)
-{
-       char *tmp = dest;
-
-       while (count--)
-               *tmp++ = *src++;
-
-       return dest;
-}
-#endif
-
 #ifndef __HAVE_ARCH_MEMCPY
 /**
  * memcpy - Copy one area of memory to another
@@ -508,16 +543,9 @@ void * memmove(void * dest,const void *src,size_t count)
 {
        char *tmp, *s;
 
-       if (src == dest)
-               return dest;
-
        if (dest <= src) {
-               tmp = (char *) dest;
-               s = (char *) src;
-               while (count--)
-                       *tmp++ = *s++;
-               }
-       else {
+               memcpy(dest, src, count);
+       } else {
                tmp = (char *) dest + count;
                s = (char *) src + count;
                while (count--)
@@ -675,4 +703,3 @@ void *memchr_inv(const void *start, int c, size_t bytes)
        return check_bytes8(start, value, bytes % 8);
 }
 #endif
-