1 files changed, 68 insertions, 0 deletions
diff --git a/src/instruction/mod.rs b/src/instruction/mod.rs
new file mode 100644
index 0000000..e9aac26
--- /dev/null
+++ b/src/instruction/mod.rs
@@ -0,0 +1,68 @@
+// Copyright 2021-2024 Gabriel Bjørnager Jensen.
+//
+// This file is part of Pollex.
+//
+// Pollex is free software: you can redistribute it
+// and/or modify it under the terms of the GNU Af-
+// fero General Public License as published by the
+// Free Software Foundation, either version 3 of
+// the License, or (at your option) any later ver-
+// sion.
+//
+// Pollex 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 Af-
+// fero General Public License along with Pollex.
+// If not, see <https://www.gnu.org/licenses/>.
+
+use core::fmt::Display;
+
+#[derive(Clone, Copy, Debug, Eq, Ord, PartialEq, PartialOrd)]
+#[repr(u8)]
+pub enum Register {
+	R0  = 0x00,
+	R1  = 0x01,
+	R2  = 0x02,
+	R3  = 0x03,
+	R4  = 0x04,
+	R5  = 0x05,
+	R6  = 0x06,
+	R7  = 0x07,
+	R8  = 0x08,
+	Sb  = 0x09, // R9
+	Sl  = 0x0A, // R10
+	R11 = 0x0B,
+	Ip  = 0x0C, // R12
+	Sp  = 0x0D, // R13
+	Lr  = 0x0E, // R14
+	Pc  = 0x0F, // R15
+}
+
+impl Display for Register {
+	fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
+		use Register::*;
+
+		match *self {
+			R0  => write!(f, "r0"),
+			R1  => write!(f, "r1"),
+			R2  => write!(f, "r2"),
+			R3  => write!(f, "r3"),
+			R4  => write!(f, "r4"),
+			R5  => write!(f, "r5"),
+			R6  => write!(f, "r6"),
+			R7  => write!(f, "r7"),
+			R8  => write!(f, "r8"),
+			Sb  => write!(f, "sb"),
+			Sl  => write!(f, "sl"),
+			R11 => write!(f, "r11"),
+			Ip  => write!(f, "ip"),
+			Sp  => write!(f, "sp"),
+			Lr  => write!(f, "lr"),
+			Pc  => write!(f, "pc"),
+		}
+	}
+}