Relicense to BSD 2-Clause to align better with the RISC-V community

LICENSE

@@ -1,18 +1,9 @@
-MIT License
+Copyright 2025 taitep
 
-Copyright (c) 2025 taitep
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and 
-associated documentation files (the "Software"), to deal in the Software without restriction, including 
-without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
-copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the 
-following conditions:
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 
-The above copyright notice and this permission notice shall be included in all copies or substantial 
-portions of the Software.
+2. 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.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
-LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO 
-EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 
-USE OR OTHER DEALINGS IN THE SOFTWARE.
+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.

README.md

@@ -12,6 +12,10 @@ The emulator will load a raw binary image or static ELF executable from a file s
 which starts at 0x80000000 and is currently 16MiB,
 and start execution at the start of the image/ram or the ELF entry point.
 
+It also starts a gdb stub/server listening on localhost:1234. By giving the command line argument
+`--wait`, you can make execution wait until GDB is connected, allowing you to follow execution
+from the start.
+
 There is also a debug out section at `0x00000000`-`0x00010000`.
 Anything written to it will be logged out in hex.
 
@@ -22,3 +26,7 @@ There is also a UART at `0x00010000`-`0x00010002`, the interface is quite simple
   the UART is ready to be written to. Currently always 1.
   Next least significant is `RX_READY`, indicates whether the read buffer
   has any data to read.
+
+## Licensing
+This project is licensed under the BSD 2-Clause license.
+See the LICENSE file in the project root

src/basic_uart.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.

src/core.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.

src/core/commands.rs

@@ -1,3 +1,9 @@
+// Copyright (c) 2025 taitep
+// SPDX-License-Identifier: BSD-2-Clause
+//
+// This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
+// See LICENSE file in the project root for full license text.
+
 use crate::gdb;
 
 pub enum CoreCmd {

src/decode.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.

src/exceptions.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.

src/execload.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.

src/gdb.rs

@@ -1,3 +1,9 @@
+// Copyright (c) 2025 taitep
+// SPDX-License-Identifier: BSD-2-Clause
+//
+// This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
+// See LICENSE file in the project root for full license text.
+
 use std::{
     io::{self, BufRead, ErrorKind, Write},
     net::{TcpListener, TcpStream},

src/instructions.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.

src/instructions/macros.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.

src/instructions/rvi.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.

src/instructions/rvi/mem.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.

src/main.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.

src/mem.rs

@@ -1,5 +1,5 @@
 // Copyright (c) 2025 taitep
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: BSD-2-Clause
 //
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.