1 files changed, 39 insertions, 0 deletions
diff --git a/tools/sysinc/string.h b/tools/sysinc/string.h
new file mode 100644
index 0000000..1aa9e26
--- /dev/null
+++ b/tools/sysinc/string.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: MIT */
+
+#ifndef STRING_H
+#define STRING_H
+
+#include <stddef.h>
+
+void *memcpy(void *s1, const void *s2, size_t n);
+void *memmove(void *s1, const void *s2, size_t n);
+int memcmp(const void *s1, const void *s2, size_t n);
+void *memset(void *s, int c, size_t n);
+void *memchr(const void *s, int c, size_t n);
+char *strcpy(char *s1, const char *s2);
+char *strncpy(char *s1, const char *s2, size_t n);
+int strcmp(const char *s1, const char *s2);
+int strncmp(const char *s1, const char *s2, size_t n);
+size_t strlen(const char *s);
+size_t strnlen(const char *s, size_t n);
+char *strchr(const char *s, int c);
+char *strrchr(const char *s, int c);
+long atol(const char *s);
+
+static inline int tolower(int c)
+{
+    if (c >= 'A' && c <= 'Z')
+        return c - 'A' + 'a';
+    else
+        return c;
+}
+
+static inline int toupper(int c)
+{
+    if (c >= 'a' && c <= 'z')
+        return c - 'a' + 'A';
+    else
+        return c;
+}
+
+#endif