1 files changed, 30 insertions, 0 deletions
diff --git a/src/hlp.c b/src/hlp.c
new file mode 100644
index 0000000..63a5c08
--- /dev/null
+++ b/src/hlp.c
@@ -0,0 +1,30 @@
+/*
+	Copyright 2022-2023 Gabriel Jensen.
+
+	This file is part of agbsum.
+	agbsum is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+	agbsum 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 Affero General Public License for more details.
+	You should have received a copy of the GNU Affero General Public License along with agbsum. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <agbsum.h>
+
+#include <inttypes.h>
+#include <stdio.h>
+
+void
+agb_hlp (void)
+{
+	fprintf (stderr,
+		"agbsum - Calculate GBA ROM header checksums.\n"
+		"Release #%" PRIX64 ". Copyright 2022-2023 Gabriel Jensen.\n"
+		"\n"
+		"Usage: agbsum [options] <ROM>\n"
+		"Options:\n"
+		"    --help -h    Print the help screen\n"
+		"    -p           Patch the ROM\n"
+		"    -s           Don't print the results\n"
+		"\n",
+		agb_rel
+	);
+}