dmnt: add basic gdb packet receive logic

stratosphere/dmnt.gen2/source/dmnt2_gdb_packet_io.hpp

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+#include "dmnt2_htcs_session.hpp"
+
+namespace ams::dmnt {
+
+    static constexpr size_t GdbPacketBufferSize = 16_KB;
+
+    class GdbPacketIo {
+        private:
+            os::SdkMutex m_mutex;
+            bool m_no_ack;
+        public:
+            GdbPacketIo() : m_mutex(), m_no_ack(false) { /* ... */ }
+
+            void SetNoAck() { m_no_ack = true; }
+
+            void SendPacket(bool *out_break, const char *src, HtcsSession *session);
+            char *ReceivePacket(bool *out_break, char *dst, size_t size, HtcsSession *session);
+    };
+
+}