Try loading code at runtime

src/riscv.rs

@@ -1,101 +0,0 @@
-#![allow(unused)]
-
-use core::arch::naked_asm;
-
-use crate::clear_csr;
-use crate::read_csr;
-use crate::set_csr;
-
-pub struct MStatus;
-pub struct SStatus;
-
-impl MStatus {
-    pub const MIE: usize = 1 << 3;
-    pub const MPIE: usize = 1 << 7;
-}
-impl SStatus {
-    pub const SIE: usize = 1 << 1;
-    pub const SPIE: usize = 1 << 5;
-}
-
-pub fn get_interrupt_state() -> bool {
-    (read_csr!(mstatus) & MStatus::MIE as u64) != 0
-}
-pub fn get_supervisor_interrupt_state() -> bool {
-    (read_csr!(sstatus) & SStatus::SIE as u64) != 0
-}
-pub fn enable_interrupt() {
-    set_csr!(mstatus, MStatus::MIE);
-}
-pub fn enable_supervisor_interrupt() {
-    set_csr!(sstatus, SStatus::SIE);
-}
-pub fn disable_interrupt() {
-    clear_csr!(mstatus, MStatus::MIE);
-}
-pub fn disable_supervisor_interrupt() {
-    clear_csr!(sstatus, SStatus::SIE);
-}
-pub fn restore_interrupt(previous_state: bool) {
-    if previous_state {
-        enable_interrupt();
-    } else {
-        disable_interrupt();
-    }
-}
-pub fn restore_supervisor_interrupt(previous_state: bool) {
-    if previous_state {
-        enable_supervisor_interrupt();
-    } else {
-        disable_supervisor_interrupt();
-    }
-}
-
-#[macro_export]
-macro_rules! read_csr {
-    ($name:ident) => {{
-        let res: u64;
-        unsafe { core::arch::asm!(concat!("csrr {}, ", stringify!($name)), out(reg) res, options(nomem, nostack)) };
-        res
-    }};
-}
-#[macro_export]
-macro_rules! write_csr {
-    ($name:ident, $value:expr) => {
-        let val = $value;
-        unsafe { core::arch::asm!(concat!("csrw ", stringify!($name), ", {}"), in(reg) val, options(nomem, nostack)) };
-    };
-}
-#[macro_export]
-macro_rules! set_csr {
-    ($name:ident, $value:expr) => {
-        let val = $value;
-        unsafe { core::arch::asm!(concat!("csrs ", stringify!($name), ", {}"), in(reg) val, options(nomem, nostack)) };
-    };
-}
-#[macro_export]
-macro_rules! clear_csr {
-    ($name:ident, $value:expr) => {
-        let val = $value;
-        unsafe { core::arch::asm!(concat!("csrc ", stringify!($name), ", {}"), in(reg) val, options(nomem, nostack)) };
-    };
-}
-
-#[macro_export]
-macro_rules! mret {
-    () => {
-        unsafe { core::arch::asm!("mret", options(noreturn)) }
-    };
-}
-
-#[unsafe(naked)]
-pub extern "C" fn exit_qemu() {
-    naked_asm!(
-        "
-    li   a0, 0x100000
-    li   a1, 0x5555
-    sw   a1, 0(a0)
-    wfi
-        "
-    )
-}