1 files changed, 142 insertions, 0 deletions
diff --git a/mini-os/lib/string.c b/mini-os/lib/string.c
new file mode 100644
index 0000000000..c1b9dbfc8e
--- /dev/null
+++ b/mini-os/lib/string.c
@@ -0,0 +1,142 @@
+/* -*-  Mode:C; c-basic-offset:4; tab-width:4 -*-
+ ****************************************************************************
+ * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge
+ ****************************************************************************
+ *
+ *        File: string.c
+ *      Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk)
+ *     Changes: 
+ *              
+ *        Date: Aug 2003
+ * 
+ * Environment: Xen Minimal OS
+ * Description: Library function for string and memory manipulation
+ *              Origin unknown
+ *
+ ****************************************************************************
+ * $Id: c-insert.c,v 1.7 2002/11/08 16:04:34 rn Exp $
+ ****************************************************************************
+ */
+
+#include <os.h>
+#include <types.h>
+#include <lib.h>
+
+int memcmp(const void * cs,const void * ct,size_t count)
+{
+	const unsigned char *su1, *su2;
+	signed char res = 0;
+
+	for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
+		if ((res = *su1 - *su2) != 0)
+			break;
+	return res;
+}
+
+void * memcpy(void * dest,const void *src,size_t count)
+{
+	char *tmp = (char *) dest, *s = (char *) src;
+
+	while (count--)
+		*tmp++ = *s++;
+
+	return dest;
+}
+
+int strncmp(const char * cs,const char * ct,size_t count)
+{
+	register signed char __res = 0;
+
+	while (count) {
+		if ((__res = *cs - *ct++) != 0 || !*cs++)
+			break;
+		count--;
+	}
+
+	return __res;
+}
+
+int strcmp(const char * cs,const char * ct)
+{
+        register signed char __res;
+
+        while (1) {
+                if ((__res = *cs - *ct++) != 0 || !*cs++)
+                        break;
+        }
+
+        return __res;
+}
+
+char * strcpy(char * dest,const char *src)
+{
+        char *tmp = dest;
+
+        while ((*dest++ = *src++) != '\0')
+                /* nothing */;
+        return tmp;
+}
+
+char * strncpy(char * dest,const char *src,size_t count)
+{
+        char *tmp = dest;
+
+        while (count-- && (*dest++ = *src++) != '\0')
+                /* nothing */;
+
+        return tmp;
+}
+
+void * memset(void * s,int c,size_t count)
+{
+        char *xs = (char *) s;
+
+        while (count--)
+                *xs++ = c;
+
+        return s;
+}
+
+size_t strnlen(const char * s, size_t count)
+{
+        const char *sc;
+
+        for (sc = s; count-- && *sc != '\0'; ++sc)
+                /* nothing */;
+        return sc - s;
+}
+
+size_t strlen(const char * s)
+{
+	const char *sc;
+
+	for (sc = s; *sc != '\0'; ++sc)
+		/* nothing */;
+	return sc - s;
+}
+
+char * strchr(const char * s, int c)
+{
+        for(; *s != (char) c; ++s)
+                if (*s == '\0')
+                        return NULL;
+        return (char *) s;
+}
+
+char * strstr(const char * s1,const char * s2)
+{
+        int l1, l2;
+
+        l2 = strlen(s2);
+        if (!l2)
+                return (char *) s1;
+        l1 = strlen(s1);
+        while (l1 >= l2) {
+                l1--;
+                if (!memcmp(s1,s2,l2))
+                        return (char *) s1;
+                s1++;
+        }
+        return NULL;
+}
+