From 599507c3497c0b79acc0d99afe1ef783583920f2 Mon Sep 17 00:00:00 2001
From: Cassie Jones <code@witchoflight.com>
Date: Sat, 11 Jan 2020 01:44:06 -0500
Subject: [PATCH] Add instruction datatype

---
 toolchain/.gitignore  |  1 +
 toolchain/Cargo.lock  |  5 +++
 toolchain/Cargo.toml  |  9 ++++
 toolchain/src/inst.rs | 96 +++++++++++++++++++++++++++++++++++++++++++
 toolchain/src/lib.rs  |  1 +
 toolchain/src/main.rs |  3 ++
 6 files changed, 115 insertions(+)
 create mode 100644 toolchain/.gitignore
 create mode 100644 toolchain/Cargo.lock
 create mode 100644 toolchain/Cargo.toml
 create mode 100644 toolchain/src/inst.rs
 create mode 100644 toolchain/src/lib.rs
 create mode 100644 toolchain/src/main.rs

diff --git a/toolchain/.gitignore b/toolchain/.gitignore
new file mode 100644
index 0000000..2f7896d
--- /dev/null
+++ b/toolchain/.gitignore
@@ -0,0 +1 @@
+target/
diff --git a/toolchain/Cargo.lock b/toolchain/Cargo.lock
new file mode 100644
index 0000000..e24cc9f
--- /dev/null
+++ b/toolchain/Cargo.lock
@@ -0,0 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "toolchain"
+version = "0.1.0"
diff --git a/toolchain/Cargo.toml b/toolchain/Cargo.toml
new file mode 100644
index 0000000..e910a73
--- /dev/null
+++ b/toolchain/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "toolchain"
+version = "0.1.0"
+authors = ["Cassie Jones <code@witchoflight.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/toolchain/src/inst.rs b/toolchain/src/inst.rs
new file mode 100644
index 0000000..db8c939
--- /dev/null
+++ b/toolchain/src/inst.rs
@@ -0,0 +1,96 @@
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub struct Reg(u8);
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum Op1 {
+    Zero,
+    Lsl1,
+    Lsr1,
+    Asr1,
+    Incr,
+    Decr,
+    Comp,
+    Negt,
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum OpR {
+    Add,
+    Sub,
+    And,
+    Ior,
+    Xor,
+    Lsl,
+    Lsr,
+    Asr,
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum Data {
+    D1,
+    D2,
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum Special {
+    Data(Data),
+    Code,
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub struct U3(u8);
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub struct AddImm(i8);
+
+impl U3 {
+    pub fn new(x: u8) -> Option<U3> {
+        match x {
+            0..=7 => Some(U3(x)),
+            _ => None,
+        }
+    }
+}
+
+impl AddImm {
+    pub fn new(x: i8) -> Option<AddImm> {
+        match x {
+            -64..=127 => Some(AddImm(x)),
+            _ => None,
+        }
+    }
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum AluI {
+    And(u8),
+    Ior(u8),
+    Xor(u8),
+    Add(AddImm),
+    Rol(U3),
+    Lsl(U3),
+    Lsr(U3),
+    Asr(U3),
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum Inst {
+    Trap,
+    JAbs,
+    CAbs,
+    JOff,
+    COff,
+    Swap(Reg),
+    GetR(Reg),
+    SetR(Reg),
+    Get(Special),
+    Set(Special),
+    Alu1(Op1),
+    IsLt(Reg),
+    AluR(OpR, Reg),
+    LdD(Data, Reg),
+    StD(Data, Reg),
+    AluI(AluI),
+    BEzI(i8),
+    JOfI(i8),
+    COfI(i8),
+}
diff --git a/toolchain/src/lib.rs b/toolchain/src/lib.rs
new file mode 100644
index 0000000..d4cc11e
--- /dev/null
+++ b/toolchain/src/lib.rs
@@ -0,0 +1 @@
+pub mod inst;
diff --git a/toolchain/src/main.rs b/toolchain/src/main.rs
new file mode 100644
index 0000000..c89b901
--- /dev/null
+++ b/toolchain/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    todo!();
+}
-- 
2.43.2