4 files changed, 0 insertions, 118 deletions
diff --git a/kernel/src/arch/hosted/mod.rs b/kernel/src/arch/hosted/mod.rs
deleted file mode 100644
index c1fb0ff..0000000
--- a/kernel/src/arch/hosted/mod.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-//! Support for running under an operating system that provides libstd, for testing.
-
-extern crate std;
-
-use std::{thread::sleep, time::Duration};
-
-/// No-opped interrupt support.
-///
-/// TODO: Should this use Unix signals?
-pub mod interrupts {
-    pub fn disable_interrupts() {}
-}
-
-/// Sleeps forever, in one-second chunks.
-pub fn sleep_forever() -> ! {
-    loop {
-        sleep(Duration::from_secs(1));
-    }
-}
diff --git a/kernel/src/arch/mod.rs b/kernel/src/arch/mod.rs
deleted file mode 100644
index d23dd81..0000000
--- a/kernel/src/arch/mod.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-cfg_if::cfg_if! {
-    if #[cfg(not(target_os = "none"))] {
-        mod hosted;
-        pub use self::hosted::*;
-    } else if #[cfg(target_arch = "riscv64")] {
-        mod riscv64;
-        pub use self::riscv64::*;
-    }
-}
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();
-}
diff --git a/kernel/src/arch/riscv64/mod.rs b/kernel/src/arch/riscv64/mod.rs
deleted file mode 100644
index 32731e8..0000000
--- a/kernel/src/arch/riscv64/mod.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-pub mod interrupts;
-
-/// Halts the hart.
-pub fn sleep_forever() -> ! {
-    loop {
-        unsafe { core::arch::asm!("wfi") }
-    }
-}