init commit

include/stdlib.h

@@ -0,0 +1,18 @@
+#ifndef _ELIBC_STDLIB_H
+#define _ELIBC_STDLIB_H
+
+#include <stddef.h>
+
+void  *malloc(size_t);
+void  *calloc(size_t, size_t);
+void  *realloc(void *, size_t);
+void   free(void *);
+
+void   exit(int) __attribute__((noreturn));
+void   abort(void) __attribute__((noreturn));
+
+int    atoi(const char *);
+long   atol(const char *);
+long long atoll(const char *);
+
+#endif