add missing files not taken with github import

tos/pci_mem/include/bas_string.h

@@ -0,0 +1,47 @@
+/*
+ * bas_string.h
+ *
+ * This file is part of BaS_gcc.
+ *
+ * BaS_gcc is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * BaS_gcc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with BaS_gcc.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *  Created on: 26.02.2013
+ *      Author: Markus Fröschle
+ */
+
+#ifndef BAS_STRING_H_
+#define BAS_STRING_H_
+
+#include <stddef.h>
+
+extern int strncmp(const char *s1, const char *s2, size_t max);
+extern char *strcpy(char *dst, const char *src);
+char *strncpy(char *dst, const char *src, size_t max);
+extern int strcmp(const char *s1, const char *s2);
+extern size_t strlen(const char *str);
+extern char *strcat(char *dst, const char *src);
+extern char *strncat(char *dst, const char *src, size_t max);
+extern int atoi(const char *c);
+extern void *memcpy(void *dst, const void *src, size_t n);
+extern void *memset(void *s, int c, size_t n);
+extern int memcmp(const void *s1, const void *s2, size_t max);
+extern void bzero(void *s, size_t n);
+
+#define isdigit(c)	(((c) >= '0') && ((c) <= '9'))
+#define isupper(c)	((c) >= 'A' && ((c) <= 'Z'))
+#define islower(c)	((c) >= 'a' && ((c) <= 'z'))
+#define isalpha(c)	(isupper((c)) || islower(c))
+#define tolower(c)	(isupper(c) ? ((c) + 'a' - 'A') : (c))
+
+#endif /* BAS_STRING_H_ */