1 files changed, 56 insertions, 0 deletions
diff --git a/contrib/bc/src/dc.c b/contrib/bc/src/dc.c
new file mode 100644
index 000000000000..41c49a08b367
--- /dev/null
+++ b/contrib/bc/src/dc.c
@@ -0,0 +1,56 @@
+/*
+ * *****************************************************************************
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * *****************************************************************************
+ *
+ * The main procedure of dc.
+ *
+ */
+
+#if DC_ENABLED
+
+#include <string.h>
+
+#include <dc.h>
+#include <vm.h>
+
+void dc_main(int argc, char **argv) {
+
+	vm.read_ret = BC_INST_POP_EXEC;
+	vm.help = dc_help;
+	vm.sigmsg = dc_sig_msg;
+	vm.siglen = dc_sig_msg_len;
+
+	vm.next = dc_lex_token;
+	vm.parse = dc_parse_parse;
+	vm.expr = dc_parse_expr;
+
+	bc_vm_boot(argc, argv, "DC_LINE_LENGTH", "DC_ENV_ARGS");
+}
+#endif // DC_ENABLED