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Fixed to use new scheduler return values

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This commit is contained in:
Stephen Marz 2020-03-12 13:56:21 -04:00
parent 7b038cdc24
commit 552595d901
1 changed files with 7 additions and 7 deletions
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14
risc_v/ch9/src/trap.rs
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@ -7,10 +7,7 @@ use crate::cpu::{CONTEXT_SWITCH_TIME, TrapFrame};
use crate::{plic, uart};
use crate::syscall::do_syscall;
use crate::sched::schedule;
extern "C" {
fn switch_to_user(frame: usize, mepc: usize, satp: usize) -> !;
}
use crate::rust_switch_to_user;
#[no_mangle]
/// The m_trap stands for "machine trap". Right now, we are handling
@ -45,7 +42,7 @@ extern "C" fn m_trap(epc: usize,
match cause_num {
3 => {
// Machine software
println!("Machine software interrupt CPU#{}", hart);
println!("Machine software interrupt CPU #{}", hart);
},
7 => unsafe {
// This is the context-switch timer.
@ -53,13 +50,13 @@ extern "C" fn m_trap(epc: usize,
// process to run.
// Machine timer
// println!("CTX");
let (frame, mepc, satp) = schedule();
let (frame, satp) = schedule();
let mtimecmp = 0x0200_4000 as *mut u64;
let mtime = 0x0200_bff8 as *const u64;
// This is much too slow for normal operations, but it gives us
// a visual of what's happening behind the scenes.
mtimecmp.write_volatile(mtime.read_volatile().wrapping_add(CONTEXT_SWITCH_TIME));
switch_to_user(frame, mepc, satp);
rust_switch_to_user(frame, satp);
},
11 => {
// Machine external (interrupt from Platform Interrupt Controller (PLIC))
@ -124,6 +121,9 @@ extern "C" fn m_trap(epc: usize,
// Illegal instruction
panic!("Illegal instruction CPU#{} -> 0x{:08x}: 0x{:08x}\n", hart, epc, tval);
// We need while trues here until we have a functioning "delete from scheduler"
// I use while true because Rust will warn us that it looks stupid.
// This is what I want so that I remember to remove this and replace
// them later.
while true {}
},
8 => {