From 9dc01a04044b5f882bb15567818fa2a51af68691 Mon Sep 17 00:00:00 2001
From: Aleksa Vuckovic <aleksa@vuckovic.cc>
Date: Sun, 13 Apr 2025 15:22:11 +0200
Subject: Initial commit

---
 src/rv32i/mod.rs   |  2 ++
 src/rv32i/rv32i.rs | 14 ++++++++++++++
 src/rv32i/slti.rs  | 18 ++++++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 src/rv32i/mod.rs
 create mode 100644 src/rv32i/rv32i.rs
 create mode 100644 src/rv32i/slti.rs

(limited to 'src/rv32i')

diff --git a/src/rv32i/mod.rs b/src/rv32i/mod.rs
new file mode 100644
index 0000000..2fb36ce
--- /dev/null
+++ b/src/rv32i/mod.rs
@@ -0,0 +1,2 @@
+pub mod rv32i;
+pub mod slti;
\ No newline at end of file
diff --git a/src/rv32i/rv32i.rs b/src/rv32i/rv32i.rs
new file mode 100644
index 0000000..88826b2
--- /dev/null
+++ b/src/rv32i/rv32i.rs
@@ -0,0 +1,14 @@
+use crate::rv32_cpu::rv32_cpu::Rv32Cpu;
+use crate::extension::extension::Extension;
+use super::slti::Slti;
+use crate::instruction::instruction::Instruction;
+
+pub struct Rv32i {
+}
+
+impl Extension for Rv32i {
+    fn add_instructions(cpu: &mut Rv32Cpu) -> &mut Rv32Cpu {
+        cpu.add_decode(Slti.opcode(), Box::new(Slti));
+        cpu
+    }
+}
\ No newline at end of file
diff --git a/src/rv32i/slti.rs b/src/rv32i/slti.rs
new file mode 100644
index 0000000..09d166c
--- /dev/null
+++ b/src/rv32i/slti.rs
@@ -0,0 +1,18 @@
+use crate::rv32_cpu::rv32_cpu::State;
+use crate::instruction::instruction::{Instruction, Opcode};
+
+#[derive(Debug)]
+pub struct Slti;
+
+impl Instruction for Slti {
+    fn opcode(&self) -> Opcode {
+        Opcode {
+            opcode6_2: 0b00100,
+            opcode14_12: Some(0b001),
+            opcode31_27: Some(0b00000),
+        }
+    }
+    fn execute(&self, instruction: u32, state: &mut State) -> Result<(), Box<dyn std::error::Error>> {
+        Ok(())
+    }
+}
-- 
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