feat(sys): add malloc

app/nolibc.c

@@ -1,6 +1,19 @@
+#include <c-libs/sys/memory.h>
 #include <c-libs/sys/syscall.h>
 
+void strcpy(char *dst, const char *src) {
+  int ix = 0;
+  do {
+    dst[ix] = src[ix];
+  } while (src[ix++]);
+}
+
 int main() {
-  write(0, "Hello World!\n", 13);
+  char *str = malloc(14);
+  strcpy(str, "Hello World!\n");
+
+  write(0, str, 13);
+
+  munmap(str, 14);
   return 0;
 }