Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

update toolchain #188

Merged
merged 2 commits into from
Jul 28, 2021
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions .gitignore
Original file line number Diff line number Diff line change
Expand Up @@ -7,3 +7,5 @@ Cargo.lock
.idea
scripts/linux/test-result.txt
rusty-tags.vi
*.img
zCore/src/link_user.S
162 changes: 82 additions & 80 deletions kernel-hal-bare/src/arch/riscv/interrupt.rs
Original file line number Diff line number Diff line change
@@ -1,47 +1,40 @@
use alloc::boxed::Box;
use alloc::vec::Vec;
use riscv::register::{
scause::{
self,
Trap,
Exception,
Interrupt,
},
satp,
sie,
stval,
sstatus,
scause::{self, Exception, Interrupt, Trap},
sie, sstatus, stval,
};
use trapframe::{TrapFrame, UserContext};
use alloc::boxed::Box;
use alloc::vec::Vec;
use spin::Mutex;
use trapframe::{TrapFrame, UserContext};

/*
use crate::timer::{
TICKS,
clock_set_next_event,
TICKS,
clock_set_next_event,
clock_close,
};
*/

//use crate::context::TrapFrame;
use super::sbi;
use super::plic;
use super::sbi;
use super::uart;

use crate::{putfmt, map_range, phys_to_virt};
use super::consts::PHYSICAL_MEMORY_OFFSET;
use super::timer_set_next;
use crate::{map_range, phys_to_virt, putfmt};

//global_asm!(include_str!("trap.asm"));

/*
#[repr(C)]
pub struct TrapFrame{
pub x: [usize; 32], //General registers
pub sstatus: Sstatus,
pub sepc: usize,
pub stval: usize,
pub scause: Scause,
pub x: [usize; 32], //General registers
pub sstatus: Sstatus,
pub sepc: usize,
pub stval: usize,
pub scause: Scause,
}
*/

Expand All @@ -52,27 +45,25 @@ lazy_static! {
}

fn init_irq() {

init_irq_table();
irq_add_handle(Timer, Box::new(super_timer)); //模拟参照了x86_64,把timer处理函数也放进去了
//irq_add_handle(Keyboard, Box::new(keyboard));
//irq_add_handle(Keyboard, Box::new(keyboard));
irq_add_handle(S_PLIC, Box::new(plic::handle_interrupt));
}

pub fn init(){
unsafe{

sstatus::set_sie();
pub fn init() {
unsafe {
sstatus::set_sie();

init_uart();

sie::set_sext();
init_ext();
}
}

init_irq();

bare_println!("+++ setup interrupt +++");
bare_println!("+++ setup interrupt +++");
}

#[no_mangle]
Expand All @@ -83,20 +74,26 @@ pub extern "C" fn trap_handler(tf: &mut TrapFrame) {
let is_int = scause.bits() >> 63;
let code = scause.bits() & !(1 << 63);

match scause.cause() {
Trap::Exception(Exception::Breakpoint) => breakpoint(&mut tf.sepc),
Trap::Exception(Exception::IllegalInstruction) => panic!("IllegalInstruction: {:#x}->{:#x}", sepc, stval),
Trap::Exception(Exception::LoadFault) => panic!("Load access fault: {:#x}->{:#x}", sepc, stval),
Trap::Exception(Exception::StoreFault) => panic!("Store access fault: {:#x}->{:#x}", sepc, stval),
match scause.cause() {
Trap::Exception(Exception::Breakpoint) => breakpoint(&mut tf.sepc),
Trap::Exception(Exception::IllegalInstruction) => {
panic!("IllegalInstruction: {:#x}->{:#x}", sepc, stval)
}
Trap::Exception(Exception::LoadFault) => {
panic!("Load access fault: {:#x}->{:#x}", sepc, stval)
}
Trap::Exception(Exception::StoreFault) => {
panic!("Store access fault: {:#x}->{:#x}", sepc, stval)
}
Trap::Exception(Exception::LoadPageFault) => page_fault(stval, tf),
Trap::Exception(Exception::StorePageFault) => page_fault(stval, tf),
Trap::Exception(Exception::InstructionPageFault) => page_fault(stval, tf),
Trap::Interrupt(Interrupt::SupervisorTimer) => super_timer(),
Trap::Interrupt(Interrupt::SupervisorSoft) => super_soft(),
Trap::Interrupt(Interrupt::SupervisorTimer) => super_timer(),
Trap::Interrupt(Interrupt::SupervisorSoft) => super_soft(),
Trap::Interrupt(Interrupt::SupervisorExternal) => plic::handle_interrupt(),
//Trap::Interrupt(Interrupt::SupervisorExternal) => irq_handle(code as u8),
_ => panic!("Undefined Trap: {:#x} {:#x}", is_int, code)
}
//Trap::Interrupt(Interrupt::SupervisorExternal) => irq_handle(code as u8),
_ => panic!("Undefined Trap: {:#x} {:#x}", is_int, code),
}
}

fn init_irq_table() {
Expand Down Expand Up @@ -202,44 +199,47 @@ pub fn overwrite_handler(msi_id: u32, handle: Box<dyn Fn() + Send + Sync>) -> bo
set
}

fn breakpoint(sepc: &mut usize){
bare_println!("Exception::Breakpoint: A breakpoint set @0x{:x} ", sepc);
fn breakpoint(sepc: &mut usize) {
bare_println!("Exception::Breakpoint: A breakpoint set @0x{:x} ", sepc);

//sepc为触发中断指令ebreak的地址
//防止无限循环中断,让sret返回时跳转到sepc的下一条指令地址
*sepc +=2
//sepc为触发中断指令ebreak的地址
//防止无限循环中断,让sret返回时跳转到sepc的下一条指令地址
*sepc += 2
}

fn page_fault(stval: usize, tf: &mut TrapFrame){
fn page_fault(stval: usize, tf: &mut TrapFrame) {
let this_scause = scause::read();
info!("EXCEPTION Page Fault: {:?} @ {:#x}->{:#x}", this_scause.cause(), tf.sepc, stval);
info!(
"EXCEPTION Page Fault: {:?} @ {:#x}->{:#x}",
this_scause.cause(),
tf.sepc,
stval
);
let vaddr = stval;

use riscv::paging::{Rv39PageTable, PageTableFlags as PTF, *};
use riscv::addr::{Page, PhysAddr, VirtAddr};
use crate::PageTableImpl;
use kernel_hal::{PageTableTrait, MMUFlags};
use kernel_hal::{MMUFlags, PageTableTrait};
use riscv::addr::{Page, PhysAddr, VirtAddr};
use riscv::paging::{PageTableFlags as PTF, Rv39PageTable, *};

//let mut flags = PTF::VALID;
let code = this_scause.code();
let mut flags =
if code == 15 {
//MMUFlags::WRITE ???
MMUFlags::READ | MMUFlags::WRITE
}else if code == 12 {
MMUFlags::EXECUTE
}else {
MMUFlags::READ
};

let linear_offset =
if stval >= PHYSICAL_MEMORY_OFFSET {
// Kernel
PHYSICAL_MEMORY_OFFSET
}else{
// User
0
};
let mut flags = if code == 15 {
//MMUFlags::WRITE ???
MMUFlags::READ | MMUFlags::WRITE
} else if code == 12 {
MMUFlags::EXECUTE
} else {
MMUFlags::READ
};

let linear_offset = if stval >= PHYSICAL_MEMORY_OFFSET {
// Kernel
PHYSICAL_MEMORY_OFFSET
} else {
// User
0
};

/*
let current =
Expand All @@ -248,16 +248,19 @@ fn page_fault(stval: usize, tf: &mut TrapFrame){
map_range(&mut pt, vaddr, vaddr, linear_offset, flags);
*/

let mut pti =
PageTableImpl {
root_paddr: satp::read().frame().start_address().as_usize(),
};
let mut pti = PageTableImpl {
root_paddr: satp::read().frame().start_address().as_usize(),
};

let page = Page::of_addr(VirtAddr::new(vaddr));
if let Ok(pte) = pti.get().ref_entry(page) {
let pte = unsafe { &mut *(pte as *mut PageTableEntry) };
if !pte.is_unused() {
debug!("PageAlreadyMapped -> {:#x?}, {:?}", pte.addr().as_usize(), pte.flags());
debug!(
"PageAlreadyMapped -> {:#x?}, {:?}",
pte.addr().as_usize(),
pte.flags()
);
//TODO update flags

pti.unmap(vaddr).unwrap();
Expand All @@ -266,16 +269,16 @@ fn page_fault(stval: usize, tf: &mut TrapFrame){
pti.map(vaddr, vaddr - linear_offset, flags).unwrap();
}

fn super_timer(){
fn super_timer() {
timer_set_next();
super::timer_tick();

//bare_print!(".");

//发生外界中断时,epc的指令还没有执行,故无需修改epc到下一条
//发生外界中断时,epc的指令还没有执行,故无需修改epc到下一条
}

fn init_uart(){
fn init_uart() {
uart::Uart::new(0x1000_0000 + PHYSICAL_MEMORY_OFFSET).simple_init();

//但当没有SBI_CONSOLE_PUTCHAR时,却为什么不行?
Expand All @@ -295,7 +298,7 @@ pub fn try_process_serial() -> bool {
}
}

pub fn init_ext(){
pub fn init_ext() {
// Qemu virt
// UART0 = 10
plic::set_priority(10, 7);
Expand All @@ -305,24 +308,23 @@ pub fn init_ext(){
bare_println!("+++ Setting up PLIC +++");
}

fn super_soft(){
fn super_soft() {
sbi::clear_ipi();
bare_println!("Interrupt::SupervisorSoft!");
}

pub fn init_soft(){
pub fn init_soft() {
unsafe {
sie::set_ssoft();
}
bare_println!("+++ setup soft int! +++");
bare_println!("+++ setup soft int! +++");
}

#[export_name = "fetch_trap_num"]
pub fn fetch_trap_num(_context: &UserContext) -> usize {
scause::read().bits()
}


pub fn wait_for_interrupt() {
unsafe {
// enable interrupt and disable
Expand Down
Loading