add missing files not taken with github import

util/bas_string.c

@@ -0,0 +1,166 @@
+/*
+ * bas_string.c
+ *
+ * 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
+ */
+
+#include "bas_types.h"
+#include <stdint.h>
+#include "bas_string.h"
+
+void *memcpy(void *dst, const void *src, size_t n)
+{
+    uint8_t *to = dst;
+
+    while (to < (uint8_t *) dst + n)
+        *to++ = * (uint8_t *) src++;
+
+    return dst;
+}
+
+void *memmove(void *dst, const void *src, size_t n)
+{
+    uint8_t *to = dst;
+
+    while (to < (uint8_t *) dst + n)
+        *to++ = * (uint8_t *) src++;
+
+    return dst;
+}
+
+void bzero(void *s, size_t n)
+{
+    size_t i;
+
+    for (i = 0; i < n; i++)
+        ((unsigned char *) s)[i] = '\0';
+}
+
+void *memset(void *s, int c, size_t n)
+{
+    uint8_t *dst = s;
+
+    do
+    {
+        *dst++ = c;
+    } while ((dst - (uint8_t *) s) < n);
+
+    return s;
+}
+
+
+int memcmp(const void *s1, const void *s2, size_t max)
+{
+    int i;
+    int cmp = 0;
+
+    for (i = 0; i < max; i++)
+    {
+        cmp = (* (const char *) s1 - * (const char *) s2);
+        if (cmp != 0) return cmp;
+    }
+    return cmp;
+}
+
+int strcmp(const char *s1, const char *s2)
+{
+    int i;
+    int cmp;
+
+    for (i = 0; *s1++ && *s2++; i++)
+    {
+        cmp = (*s1 - *s2);
+        if (cmp != 0) return cmp;
+    }
+    return cmp;
+}
+
+int strncmp(const char *s1, const char *s2, size_t max)
+{
+    int i;
+    int cmp = 0;
+
+    for (i = 0; i < max && *s1++ && *s2++; i++)
+    {
+        cmp = (*s1 - *s2);
+        if (cmp != 0) return cmp;
+    }
+    return cmp;
+}
+
+char *strcpy(char *dst, const char *src)
+{
+    char *ptr = dst;
+
+    while ((*dst++ = *src++) != '\0');
+    return ptr;
+}
+
+char *strncpy(char *dst, const char *src, size_t max)
+{
+    char *ptr = dst;
+
+    while ((*dst++ = *src++) != '\0' && max-- >= 0);
+    return ptr;
+}
+
+int atoi(const char *c)
+{
+    int value = 0;
+    while (isdigit(*c))
+    {
+        value *= 10;
+        value += (int) (*c - '0');
+        c++;
+    }
+    return value;
+}
+
+size_t strlen(const char *s)
+{
+    const char *start = s;
+
+    while (*s++);
+
+    return s - start - 1;
+}
+
+
+char *strcat(char *dst, const char *src)
+{
+    char *ret = dst;
+    dst = &dst[strlen(dst)];
+    while ((*dst++ = *src++) != '\0');
+    return ret;
+}
+
+char *strncat(char *dst, const char *src, size_t max)
+{
+    size_t i;
+    char *ret = dst;
+
+    dst = &dst[strlen(dst)];
+    for (i = 0; i < max && *src; i++)
+    {
+        *dst++ = *src++;
+    }
+    *dst++ = '\0';
+
+    return ret;
+}