From 386df39c9866a4d945de46ef0dcab2363c674e0e Mon Sep 17 00:00:00 2001
From: Nathan Ringo <nathan@remexre.com>
Date: Sun, 1 Sep 2024 19:59:44 -0500
Subject: Move almost all the kernel into crates/.

---
 kernel/src/arch/riscv64/interrupts.rs | 82 -----------------------------------
 1 file changed, 82 deletions(-)
 delete mode 100644 kernel/src/arch/riscv64/interrupts.rs

(limited to 'kernel/src/arch/riscv64/interrupts.rs')

diff --git a/kernel/src/arch/riscv64/interrupts.rs b/kernel/src/arch/riscv64/interrupts.rs
deleted file mode 100644
index 302fc4f..0000000
--- a/kernel/src/arch/riscv64/interrupts.rs
+++ /dev/null
@@ -1,82 +0,0 @@
-use crate::{
-    drivers::riscv_timer::{set_timer, Instant},
-    prelude::*,
-};
-use core::{
-    arch::{asm, global_asm},
-    time::Duration,
-};
-
-/// Sets up the timer interrupt.
-#[inline(never)]
-pub(crate) fn example_timer() {
-    let now = Instant::now();
-    info!("now = {now:?}");
-
-    let in_a_sec = now + Duration::from_secs(1);
-    info!("in_a_sec = {in_a_sec:?}");
-    info!("setting a timer for 1s...");
-    set_timer(in_a_sec);
-
-    enable_interrupts();
-}
-
-/// Disables interrupts.
-pub fn disable_interrupts() {
-    // Set SSTATUS.SIE to 0, which disables interrupts.
-    //
-    // SAFETY: Not running interrupts shouldn't be able to compromise safety.
-    unsafe {
-        asm!(
-            "csrc sstatus, {sie}",
-            sie = in(reg) (1 << 1),
-            options(nomem, nostack)
-        );
-    }
-}
-
-/// Enables interrupts.
-pub fn enable_interrupts() {
-    // Set STVEC.BASE to the handler function, and STVEC.MODE to Direct. Since the trap_handler_asm
-    // has a `.align 4` before it, the lower two bits of its address should already be zero.
-    //
-    // SAFETY: Even if interrupts were already enabled, this is a valid handler.
-    unsafe {
-        asm!(
-            "csrw stvec, {stvec}",
-            stvec = in(reg) trap_handler_asm,
-            options(nomem, nostack)
-        );
-    }
-
-    // Set SSTATUS.SIE to 1, which enables interrupts.
-    //
-    // SAFETY: We just initialized STVEC, so it should be able to handle interrupts.
-    unsafe {
-        asm!(
-            "csrs sstatus, {sie}",
-            sie = in(reg) (1 << 1),
-            options(nomem, nostack)
-        );
-    }
-}
-
-fn trap_handler() {
-    todo!("trap_handler")
-}
-
-// The assembly code that calls the Rust trap handler, after saving all caller-save registers
-// to the stack.
-global_asm! {
-    // Declare the handler's symbol.
-    ".align 4",
-    "trap_handler_asm:",
-    // TODO
-    "nop",
-    "call {trap_handler}",
-    trap_handler = sym trap_handler
-}
-
-extern "C" {
-    fn trap_handler_asm();
-}
-- 
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