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This commit is contained in:
Yu Chen 2022-05-16 08:23:47 +08:00
commit d58ec14719
32 changed files with 656 additions and 77 deletions
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66
.github/workflows/doc-and-test.yml vendored Normal file
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@ -0,0 +1,66 @@
name: Build Rust Doc And Run tests
on: [push]
env:
CARGO_TERM_COLOR: always
jobs:
build-doc:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- uses: actions-rs/toolchain@v1
with:
profile: minimal
toolchain: nightly-2022-04-11
components: rust-src, llvm-tools-preview
target: riscv64gc-unknown-none-elf
- name: Build doc
run: cd os && cargo doc --no-deps --verbose
- name: Deploy to Github Pages
uses: peaceiris/actions-gh-pages@v3
with:
github_token: ${{ secrets.GITHUB_TOKEN }}
publish_dir: ./os/target/riscv64gc-unknown-none-elf/doc
destination_dir: ${{ github.ref_name }}
run-tests:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- uses: actions-rs/toolchain@v1
with:
profile: minimal
toolchain: nightly-2022-04-11
components: rust-src, llvm-tools-preview
target: riscv64gc-unknown-none-elf
- uses: actions-rs/install@v0.1
with:
crate: cargo-binutils
version: latest
use-tool-cache: true
- name: Cache QEMU
uses: actions/cache@v3
with:
path: qemu-7.0.0
key: qemu-7.0.0-x86_64-riscv64
- name: Install QEMU
run: |
sudo apt-get update
sudo apt-get install ninja-build -y
if [ ! -d qemu-7.0.0 ]; then
wget https://download.qemu.org/qemu-7.0.0.tar.xz
tar -xf qemu-7.0.0.tar.xz
cd qemu-7.0.0
./configure --target-list=riscv64-softmmu
make -j
else
cd qemu-7.0.0
fi
sudo make install
qemu-system-riscv64 --version
- name: Run usertests
run: cd os && make run TEST=1
timeout-minutes: 10

10
.gitignore vendored
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@ -1,6 +1,10 @@
.idea/*
os/target/*
os/.idea/*
.*/*
!.github/*
!.vscode/settings.json
**/target/
**/Cargo.lock
os/src/link_app.S
os/src/linker.ld
os/last-*

10
.vscode/settings.json vendored Normal file
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@ -0,0 +1,10 @@
{
// Prevent "can't find crate for `test`" error on no_std
// Ref: https://github.com/rust-lang/vscode-rust/issues/729
// For vscode-rust plugin users:
"rust.target": "riscv64gc-unknown-none-elf",
"rust.all_targets": false,
// For Rust Analyzer plugin users:
"rust-analyzer.cargo.target": "riscv64gc-unknown-none-elf",
"rust-analyzer.checkOnSave.allTargets": false
}

40
README.md
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@ -188,6 +188,46 @@ $ make run BOARD=k210
Type `Ctrl+]` to disconnect from K210.
## Show runtime debug info of OS kernel version
The branch of ch9-log contains a lot of debug info. You could try to run rcore tutorial
for understand the internal behavior of os kernel.
```sh
$ git clone https://github.com/rcore-os/rCore-Tutorial-v3.git
$ cd rCore-Tutorial-v3/os
$ git checkout ch9-log
$ make run
......
[rustsbi] RustSBI version 0.2.0-alpha.10, adapting to RISC-V SBI v0.3
.______ __ __ _______.___________. _______..______ __
| _ \ | | | | / | | / || _ \ | |
| |_) | | | | | | (----`---| |----`| (----`| |_) || |
| / | | | | \ \ | | \ \ | _ < | |
| |\ \----.| `--' |.----) | | | .----) | | |_) || |
| _| `._____| \______/ |_______/ |__| |_______/ |______/ |__|
[rustsbi] Implementation: RustSBI-QEMU Version 0.0.2
[rustsbi-dtb] Hart count: cluster0 with 1 cores
[rustsbi] misa: RV64ACDFIMSU
[rustsbi] mideleg: ssoft, stimer, sext (0x222)
[rustsbi] medeleg: ima, ia, bkpt, la, sa, uecall, ipage, lpage, spage (0xb1ab)
[rustsbi] pmp0: 0x10000000 ..= 0x10001fff (rw-)
[rustsbi] pmp1: 0x2000000 ..= 0x200ffff (rw-)
[rustsbi] pmp2: 0xc000000 ..= 0xc3fffff (rw-)
[rustsbi] pmp3: 0x80000000 ..= 0x8fffffff (rwx)
[rustsbi] enter supervisor 0x80200000
[KERN] rust_main() begin
[KERN] clear_bss() begin
[KERN] clear_bss() end
[KERN] mm::init() begin
[KERN] mm::init_heap() begin
[KERN] mm::init_heap() end
[KERN] mm::init_frame_allocator() begin
[KERN] mm::frame_allocator::lazy_static!FRAME_ALLOCATOR begin
......
```
## Rustdoc
Currently it can only help you view the code since only a tiny part of the code has been documented.

BIN
bootloader/rustsbi-qemu.bin
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Binary file not shown.

5
os/Makefile
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@ -37,6 +37,9 @@ OBJCOPY := rust-objcopy --binary-architecture=riscv64
# Disassembly
DISASM ?= -x
# Run usertests or usershell
TEST ?=
build: env switch-check $(KERNEL_BIN) fs-img
switch-check:
@ -61,7 +64,7 @@ $(KERNEL_BIN): kernel
@$(OBJCOPY) $(KERNEL_ELF) --strip-all -O binary $@
fs-img: $(APPS)
@cd ../user && make build
@cd ../user && make build TEST=$(TEST)
@rm -f $(FS_IMG)
@cd ../easy-fs-fuse && cargo run --release -- -s ../user/src/bin/ -t ../user/target/riscv64gc-unknown-none-elf/release/

88
os/src/boards/qemu.rs
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@ -1,9 +1,10 @@
pub const CLOCK_FREQ: usize = 12500000;
pub const MMIO: &[(usize, usize)] = &[
(0x1000_0000, 0x1000),
(0x1000_1000, 0x1000),
(0xC00_0000, 0x40_0000),
(0x1000_0000, 0x1000), // VIRT_UART0 in virt machine
(0x1000_1000, 0x1000), // VIRT_VIRTIO in virt machine
(0x0C00_0000, 0x40_0000), // VIRT_PLIC in virt machine
(0x0010_0000, 0x00_2000), // VIRT_TEST/RTC in virt machine
];
pub type BlockDeviceImpl = crate::drivers::block::VirtIOBlock;
@ -43,3 +44,84 @@ pub fn irq_handler() {
}
plic.complete(0, IntrTargetPriority::Supervisor, intr_src_id);
}
//ref:: https://github.com/andre-richter/qemu-exit
use core::arch::asm;
const EXIT_SUCCESS: u32 = 0x5555; // Equals `exit(0)`. qemu successful exit
const EXIT_FAILURE_FLAG: u32 = 0x3333;
const EXIT_FAILURE: u32 = exit_code_encode(1); // Equals `exit(1)`. qemu failed exit
const EXIT_RESET: u32 = 0x7777; // qemu reset
pub trait QEMUExit {
/// Exit with specified return code.
///
/// Note: For `X86`, code is binary-OR'ed with `0x1` inside QEMU.
fn exit(&self, code: u32) -> !;
/// Exit QEMU using `EXIT_SUCCESS`, aka `0`, if possible.
///
/// Note: Not possible for `X86`.
fn exit_success(&self) -> !;
/// Exit QEMU using `EXIT_FAILURE`, aka `1`.
fn exit_failure(&self) -> !;
}
/// RISCV64 configuration
pub struct RISCV64 {
/// Address of the sifive_test mapped device.
addr: u64,
}
/// Encode the exit code using EXIT_FAILURE_FLAG.
const fn exit_code_encode(code: u32) -> u32 {
(code << 16) | EXIT_FAILURE_FLAG
}
impl RISCV64 {
/// Create an instance.
pub const fn new(addr: u64) -> Self {
RISCV64 { addr }
}
}
impl QEMUExit for RISCV64 {
/// Exit qemu with specified exit code.
fn exit(&self, code: u32) -> ! {
// If code is not a special value, we need to encode it with EXIT_FAILURE_FLAG.
let code_new = match code {
EXIT_SUCCESS | EXIT_FAILURE | EXIT_RESET => code,
_ => exit_code_encode(code),
};
unsafe {
asm!(
"sw {0}, 0({1})",
in(reg)code_new, in(reg)self.addr
);
// For the case that the QEMU exit attempt did not work, transition into an infinite
// loop. Calling `panic!()` here is unfeasible, since there is a good chance
// this function here is the last expression in the `panic!()` handler
// itself. This prevents a possible infinite loop.
loop {
asm!("wfi", options(nomem, nostack));
}
}
}
fn exit_success(&self) -> ! {
self.exit(EXIT_SUCCESS);
}
fn exit_failure(&self) -> ! {
self.exit(EXIT_FAILURE);
}
}
const VIRT_TEST: u64 =0x100000;
pub const QEMU_EXIT_HANDLE: RISCV64 = RISCV64::new(VIRT_TEST);

6
os/src/drivers/block/sdcard.rs
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@ -321,14 +321,14 @@ impl</*'a,*/ X: SPI> SDCard</*'a,*/ X> {
* Get SD card data response.
* @param None
* @retval The SD status: Read data response xxx0<status>1
* - status 010: Data accecpted
* - status 010: Data accepted
* - status 101: Data rejected due to a crc error
* - status 110: Data rejected due to a Write error.
* - status 111: Data rejected due to other error.
*/
fn get_dataresponse(&self) -> u8 {
let response = &mut [0u8];
/* Read resonse */
/* Read response */
self.read_data(response);
/* Mask unused bits */
response[0] &= 0x1F;
@ -423,7 +423,7 @@ impl</*'a,*/ X: SPI> SDCard</*'a,*/ X> {
/* Byte 15 */
CSD_CRC: (csd_tab[15] & 0xFE) >> 1,
Reserved4: 1,
/* Return the reponse */
/* Return the response */
})
}

3
os/src/drivers/block/virtio_blk.rs
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@ -20,7 +20,8 @@ pub struct VirtIOBlock {
}
lazy_static! {
static ref QUEUE_FRAMES: UPIntrFreeCell<Vec<FrameTracker>> = unsafe { UPIntrFreeCell::new(Vec::new()) };
static ref QUEUE_FRAMES: UPIntrFreeCell<Vec<FrameTracker>> =
unsafe { UPIntrFreeCell::new(Vec::new()) };
}
impl BlockDevice for VirtIOBlock {

5
os/src/drivers/chardev/ns16550a.rs
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@ -1,7 +1,6 @@
///! Ref: https://www.lammertbies.nl/comm/info/serial-uart
///! Ref: ns16550a datasheet: https://datasheetspdf.com/pdf-file/605590/NationalSemiconductor/NS16550A/1
///! Ref: ns16450 datasheet: https://datasheetspdf.com/pdf-file/1311818/NationalSemiconductor/NS16450/1
use super::CharDevice;
use crate::sync::{Condvar, UPIntrFreeCell};
use crate::task::schedule;
@ -12,7 +11,7 @@ use volatile::{ReadOnly, Volatile, WriteOnly};
bitflags! {
/// InterruptEnableRegister
pub struct IER: u8 {
const RX_AVALIABLE = 1 << 0;
const RX_AVAILABLE = 1 << 0;
const TX_EMPTY = 1 << 1;
}
@ -95,7 +94,7 @@ impl NS16550aRaw {
mcr |= MCR::REQUEST_TO_SEND;
mcr |= MCR::AUX_OUTPUT2;
read_end.mcr.write(mcr);
let ier = IER::RX_AVALIABLE;
let ier = IER::RX_AVAILABLE;
read_end.ier.write(ier);
}

2
os/src/lang_items.rs
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@ -18,7 +18,7 @@ fn panic(info: &PanicInfo) -> ! {
unsafe {
backtrace();
}
shutdown()
shutdown(255)
}
unsafe fn backtrace() {

3
os/src/main.rs
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@ -46,7 +46,8 @@ use lazy_static::*;
use sync::UPIntrFreeCell;
lazy_static! {
pub static ref DEV_NON_BLOCKING_ACCESS: UPIntrFreeCell<bool> = unsafe { UPIntrFreeCell::new(false) };
pub static ref DEV_NON_BLOCKING_ACCESS: UPIntrFreeCell<bool> =
unsafe { UPIntrFreeCell::new(false) };
}
#[no_mangle]

8
os/src/sbi.rs
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@ -16,7 +16,7 @@ const SBI_SHUTDOWN: usize = 8;
fn sbi_call(which: usize, arg0: usize, arg1: usize, arg2: usize) -> usize {
let mut ret;
unsafe {
asm!(
core::arch::asm!(
"ecall",
inlateout("x10") arg0 => ret,
in("x11") arg1,
@ -39,7 +39,9 @@ pub fn console_getchar() -> usize {
sbi_call(SBI_CONSOLE_GETCHAR, 0, 0, 0)
}
pub fn shutdown() -> ! {
sbi_call(SBI_SHUTDOWN, 0, 0, 0);
use crate::board::QEMUExit;
pub fn shutdown(exit_code: usize) -> ! {
//sbi_call(SBI_SHUTDOWN, exit_code, 0, 0);
crate::board::QEMU_EXIT_HANDLE.exit_failure();
panic!("It should shutdown!");
}

5
os/src/sync/condvar.rs
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@ -1,5 +1,8 @@
use crate::sync::{Mutex, UPIntrFreeCell};
use crate::task::{add_task, block_current_task, block_current_and_run_next, current_task, TaskControlBlock, TaskContext};
use crate::task::{
add_task, block_current_and_run_next, block_current_task, current_task, TaskContext,
TaskControlBlock,
};
use alloc::{collections::VecDeque, sync::Arc};
pub struct Condvar {

22
os/src/sync/up.rs
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@ -1,7 +1,7 @@
use core::cell::{RefCell, RefMut, UnsafeCell};
use core::ops::{Deref, DerefMut};
use riscv::register::sstatus;
use lazy_static::*;
use riscv::register::sstatus;
/*
/// Wrap a static data structure inside it so that we are
@ -56,9 +56,8 @@ pub struct IntrMaskingInfo {
}
lazy_static! {
static ref INTR_MASKING_INFO: UPSafeCellRaw<IntrMaskingInfo> = unsafe {
UPSafeCellRaw::new(IntrMaskingInfo::new())
};
static ref INTR_MASKING_INFO: UPSafeCellRaw<IntrMaskingInfo> =
unsafe { UPSafeCellRaw::new(IntrMaskingInfo::new()) };
}
impl IntrMaskingInfo {
@ -71,7 +70,9 @@ impl IntrMaskingInfo {
pub fn enter(&mut self) {
let sie = sstatus::read().sie();
unsafe { sstatus::clear_sie(); }
unsafe {
sstatus::clear_sie();
}
if self.nested_level == 0 {
self.sie_before_masking = sie;
}
@ -81,7 +82,9 @@ impl IntrMaskingInfo {
pub fn exit(&mut self) {
self.nested_level -= 1;
if self.nested_level == 0 && self.sie_before_masking {
unsafe { sstatus::set_sie(); }
unsafe {
sstatus::set_sie();
}
}
}
}
@ -101,13 +104,17 @@ impl<T> UPIntrFreeCell<T> {
inner: RefCell::new(value),
}
}
/// Panic if the data has been borrowed.
pub fn exclusive_access(&self) -> UPIntrRefMut<'_, T> {
INTR_MASKING_INFO.get_mut().enter();
UPIntrRefMut(Some(self.inner.borrow_mut()))
}
pub fn exclusive_session<F, V>(&self, f: F) -> V where F: FnOnce(&mut T) -> V {
pub fn exclusive_session<F, V>(&self, f: F) -> V
where
F: FnOnce(&mut T) -> V,
{
let mut inner = self.exclusive_access();
f(inner.deref_mut())
}
@ -131,4 +138,3 @@ impl<'a, T> DerefMut for UPIntrRefMut<'a, T> {
self.0.as_mut().unwrap().deref_mut()
}
}

2
os/src/task/id.rs
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@ -46,6 +46,8 @@ lazy_static! {
unsafe { UPIntrFreeCell::new(RecycleAllocator::new()) };
}
pub const IDLE_PID: usize = 0;
pub struct PidHandle(pub usize);
pub fn pid_alloc() -> PidHandle {

22
os/src/task/mod.rs
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@ -17,7 +17,7 @@ use process::ProcessControlBlock;
use switch::__switch;
pub use context::TaskContext;
pub use id::{kstack_alloc, pid_alloc, KernelStack, PidHandle};
pub use id::{kstack_alloc, pid_alloc, KernelStack, PidHandle, IDLE_PID};
pub use manager::{add_task, pid2process, remove_from_pid2process};
pub use processor::{
current_kstack_top, current_process, current_task, current_trap_cx, current_trap_cx_user_va,
@ -53,10 +53,12 @@ pub fn block_current_task() -> *mut TaskContext {
}
pub fn block_current_and_run_next() {
let task_cx_ptr = block_current_task();
let task_cx_ptr = block_current_task();
schedule(task_cx_ptr);
}
use crate::board::QEMUExit;
pub fn exit_current_and_run_next(exit_code: i32) {
let task = take_current_task().unwrap();
let mut task_inner = task.inner_exclusive_access();
@ -72,7 +74,21 @@ pub fn exit_current_and_run_next(exit_code: i32) {
// however, if this is the main thread of current process
// the process should terminate at once
if tid == 0 {
remove_from_pid2process(process.getpid());
let pid = process.getpid();
if pid == IDLE_PID {
println!(
"[kernel] Idle process exit with exit_code {} ...",
exit_code
);
if exit_code != 0 {
//crate::sbi::shutdown(255); //255 == -1 for err hint
crate::board::QEMU_EXIT_HANDLE.exit_failure();
} else {
//crate::sbi::shutdown(0); //0 for success hint
crate::board::QEMU_EXIT_HANDLE.exit_success();
}
}
remove_from_pid2process(pid);
let mut process_inner = process.inner_exclusive_access();
// mark this process as a zombie process
process_inner.is_zombie = true;

8
os/src/task/processor.rs
View File

@ -30,7 +30,8 @@ impl Processor {
}
lazy_static! {
pub static ref PROCESSOR: UPIntrFreeCell<Processor> = unsafe { UPIntrFreeCell::new(Processor::new()) };
pub static ref PROCESSOR: UPIntrFreeCell<Processor> =
unsafe { UPIntrFreeCell::new(Processor::new()) };
}
pub fn run_tasks() {
@ -94,9 +95,8 @@ pub fn current_kstack_top() -> usize {
}
pub fn schedule(switched_task_cx_ptr: *mut TaskContext) {
let idle_task_cx_ptr = PROCESSOR.exclusive_session(|processor| {
processor.get_idle_task_cx_ptr()
});
let idle_task_cx_ptr =
PROCESSOR.exclusive_session(|processor| processor.get_idle_task_cx_ptr());
unsafe {
__switch(switched_task_cx_ptr, idle_task_cx_ptr);
}

5
os/src/task/task.rs
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@ -1,7 +1,10 @@
use super::id::TaskUserRes;
use super::{kstack_alloc, KernelStack, ProcessControlBlock, TaskContext};
use crate::trap::TrapContext;
use crate::{mm::PhysPageNum, sync::{UPIntrFreeCell, UPIntrRefMut}};
use crate::{
mm::PhysPageNum,
sync::{UPIntrFreeCell, UPIntrRefMut},
};
use alloc::sync::{Arc, Weak};
pub struct TaskControlBlock {

14
os/src/trap/mod.rs
View File

@ -11,7 +11,7 @@ use core::arch::{asm, global_asm};
use riscv::register::{
mtvec::TrapMode,
scause::{self, Exception, Interrupt, Trap},
sie, stval, stvec, sstatus, sscratch,
sie, sscratch, sstatus, stval, stvec,
};
global_asm!(include_str!("trap.S"));
@ -23,7 +23,7 @@ pub fn init() {
fn set_kernel_trap_entry() {
extern "C" {
fn __alltraps();
fn __alltraps_k();
fn __alltraps_k();
}
let __alltraps_k_va = __alltraps_k as usize - __alltraps as usize + TRAMPOLINE;
unsafe {
@ -52,7 +52,7 @@ fn enable_supervisor_interrupt() {
fn disable_supervisor_interrupt() {
unsafe {
sstatus::clear_sie();
sstatus::clear_sie();
}
}
@ -67,7 +67,7 @@ pub fn trap_handler() -> ! {
// jump to next instruction anyway
let mut cx = current_trap_cx();
cx.sepc += 4;
enable_supervisor_interrupt();
// get system call return value
@ -150,19 +150,19 @@ pub fn trap_from_kernel(_trap_cx: &TrapContext) {
match scause.cause() {
Trap::Interrupt(Interrupt::SupervisorExternal) => {
crate::board::irq_handler();
},
}
Trap::Interrupt(Interrupt::SupervisorTimer) => {
set_next_trigger();
check_timer();
// do not schedule now
},
}
_ => {
panic!(
"Unsupported trap from kernel: {:?}, stval = {:#x}!",
scause.cause(),
stval
);
},
}
}
}

2
setenv.sh Normal file
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@ -0,0 +1,2 @@
export PATH=$(rustc --print sysroot)/bin:$PATH
export RUST_SRC_PATH=$(rustc --print sysroot)/lib/rustlib/src/rust/library/

6
user/Makefile
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@ -8,9 +8,15 @@ BINS := $(patsubst $(APP_DIR)/%.rs, $(TARGET_DIR)/%.bin, $(APPS))
OBJDUMP := rust-objdump --arch-name=riscv64
OBJCOPY := rust-objcopy --binary-architecture=riscv64
CP := cp
TEST ?=
elf: $(APPS)
@cargo build --release
ifeq ($(TEST), 1)
@$(CP) $(TARGET_DIR)/usertests $(TARGET_DIR)/initproc
endif
binary: elf
$(foreach elf, $(ELFS), $(OBJCOPY) $(elf) --strip-all -O binary $(patsubst $(TARGET_DIR)/%, $(TARGET_DIR)/%.bin, $(elf));)

6
user/src/bin/cat.rs
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@ -9,10 +9,14 @@ use user_lib::{close, open, read, OpenFlags};
#[no_mangle]
pub fn main(argc: usize, argv: &[&str]) -> i32 {
println!("argc = {}", argc);
for (i, arg) in argv.iter().enumerate() {
println!("argv[{}] = {}", i, arg);
}
assert!(argc == 2);
let fd = open(argv[1], OpenFlags::RDONLY);
if fd == -1 {
panic!("Error occured when opening file");
panic!("Error occurred when opening file");
}
let fd = fd as usize;
let mut buf = [0u8; 256];

133
user/src/bin/eisenberg.rs Normal file
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@ -0,0 +1,133 @@
#![no_std]
#![no_main]
#![feature(core_intrinsics)]
#[macro_use]
extern crate user_lib;
extern crate alloc;
extern crate core;
use user_lib::{thread_create, waittid, exit, sleep};
use alloc::vec::Vec;
use core::sync::atomic::{AtomicUsize, Ordering};
const N: usize = 2;
const THREAD_NUM: usize = 10;
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
enum FlagState {
Out, Want, In,
}
static mut TURN: usize = 0;
static mut FLAG: [FlagState; THREAD_NUM] = [FlagState::Out; THREAD_NUM];
static GUARD: AtomicUsize = AtomicUsize::new(0);
fn critical_test_enter() {
assert_eq!(GUARD.fetch_add(1, Ordering::SeqCst), 0);
}
fn critical_test_claim() {
assert_eq!(GUARD.load(Ordering::SeqCst), 1);
}
fn critical_test_exit() {
assert_eq!(GUARD.fetch_sub(1, Ordering::SeqCst), 1);
}
fn eisenberg_enter_critical(id: usize) {
/* announce that we want to enter */
loop {
println!("Thread[{}] try enter", id);
vstore!(&FLAG[id], FlagState::Want);
loop {
/* check if any with higher priority is `Want` or `In` */
let mut prior_thread:Option<usize> = None;
let turn = vload!(&TURN);
let ring_id = if id < turn { id + THREAD_NUM } else { id };
// FLAG.iter() may lead to some errors, use for-loop instead
for i in turn..ring_id {
if vload!(&FLAG[i % THREAD_NUM]) != FlagState::Out {
prior_thread = Some(i % THREAD_NUM);
break;
}
}
if prior_thread.is_none() {
break;
}
println!("Thread[{}]: prior thread {} exist, sleep and retry",
id, prior_thread.unwrap());
sleep(1);
}
/* now tentatively claim the resource */
vstore!(&FLAG[id], FlagState::In);
/* enforce the order of `claim` and `conflict check`*/
memory_fence!();
/* check if anthor thread is also `In`, which imply a conflict*/
let mut conflict = false;
for i in 0..THREAD_NUM {
if i != id && vload!(&FLAG[i]) == FlagState::In {
conflict = true;
}
}
if !conflict {
break;
}
println!("Thread[{}]: CONFLECT!", id);
/* no need to sleep */
}
/* clain the trun */
vstore!(&TURN, id);
println!("Thread[{}] enter", id);
}
fn eisenberg_exit_critical(id: usize) {
/* find next one who wants to enter and give the turn to it*/
let mut next = id;
let ring_id = id + THREAD_NUM;
for i in (id+1)..ring_id {
let idx = i % THREAD_NUM;
if vload!(&FLAG[idx]) == FlagState::Want {
next = idx;
break;
}
}
vstore!(&TURN, next);
/* All done */
vstore!(&FLAG[id], FlagState::Out);
println!("Thread[{}] exit, give turn to {}", id, next);
}
pub fn thread_fn(id: usize) -> ! {
println!("Thread[{}] init.", id);
for _ in 0..N {
eisenberg_enter_critical(id);
critical_test_enter();
for _ in 0..3 {
critical_test_claim();
sleep(2);
}
critical_test_exit();
eisenberg_exit_critical(id);
}
exit(0)
}
#[no_mangle]
pub fn main() -> i32 {
let mut v = Vec::new();
// TODO: really shuffle
assert_eq!(THREAD_NUM, 10);
let shuffle:[usize; 10] = [0, 7, 4, 6, 2, 9, 8, 1, 3, 5];
for i in 0..THREAD_NUM {
v.push(thread_create(thread_fn as usize, shuffle[i]));
}
for tid in v.iter() {
let exit_code = waittid(*tid as usize);
assert_eq!(exit_code, 0, "thread conflict happened!");
println!("thread#{} exited with code {}", tid, exit_code);
}
println!("main thread exited.");
0
}

1
user/src/bin/forktree.rs
View File

@ -21,6 +21,7 @@ fn fork_child(cur: &str, branch: char) {
yield_();
exit(0);
}
exit(0);
}
fn fork_tree(cur: &str) {

16
user/src/bin/huge_write_mt.rs
View File

@ -5,9 +5,9 @@
extern crate user_lib;
extern crate alloc;
use alloc::{vec::Vec, string::String, fmt::format};
use alloc::{fmt::format, string::String, vec::Vec};
use user_lib::{close, get_time, gettid, open, write, OpenFlags};
use user_lib::{exit, thread_create, waittid};
use user_lib::{close, get_time, open, write, OpenFlags, gettid};
fn worker(size_kib: usize) {
let mut buffer = [0u8; 1024]; // 1KiB
@ -17,11 +17,11 @@ fn worker(size_kib: usize) {
let filename = format(format_args!("testf{}\0", gettid()));
let f = open(filename.as_str(), OpenFlags::CREATE | OpenFlags::WRONLY);
if f < 0 {
panic!("Open test file failed!");
panic!("Open test file failed!");
}
let f = f as usize;
for _ in 0..size_kib {
write(f, &buffer);
write(f, &buffer);
}
close(f);
exit(0)
@ -34,18 +34,18 @@ pub fn main(argc: usize, argv: &[&str]) -> i32 {
let size_kb = size_mb << 10;
let workers = argv[1].parse::<usize>().expect("wrong argument");
assert!(workers >= 1 && size_kb % workers == 0, "wrong argument");
let start = get_time();
let mut v = Vec::new();
let size_mb = 1usize;
for _ in 0..workers {
v.push(thread_create(worker as usize, size_kb / workers));
v.push(thread_create(worker as usize, size_kb / workers));
}
for tid in v.iter() {
assert_eq!(0, waittid(*tid as usize));
}
let time_ms = (get_time() - start) as usize;
let speed_kbs = size_kb * 1000 / time_ms;
println!(

78
user/src/bin/peterson.rs Normal file
View File

@ -0,0 +1,78 @@
#![no_std]
#![no_main]
#![feature(core_intrinsics)]
#![feature(asm)]
#[macro_use]
extern crate user_lib;
extern crate alloc;
extern crate core;
use user_lib::{thread_create, waittid, exit, sleep};
use core::sync::atomic::{AtomicUsize, Ordering};
use alloc::vec::Vec;
const N: usize = 3;
static mut TURN: usize = 0;
static mut FLAG: [bool; 2] = [false; 2];
static GUARD: AtomicUsize = AtomicUsize::new(0);
fn critical_test_enter() {
assert_eq!(GUARD.fetch_add(1, Ordering::SeqCst), 0);
}
fn critical_test_claim() {
assert_eq!(GUARD.load(Ordering::SeqCst), 1);
}
fn critical_test_exit() {
assert_eq!(GUARD.fetch_sub(1, Ordering::SeqCst), 1);
}
fn peterson_enter_critical(id: usize, peer_id: usize) {
println!("Thread[{}] try enter", id);
vstore!(&FLAG[id], true);
vstore!(&TURN, peer_id);
memory_fence!();
while vload!(&FLAG[peer_id]) && vload!(&TURN) == peer_id {
println!("Thread[{}] enter fail", id);
sleep(1);
println!("Thread[{}] retry enter", id);
}
println!("Thread[{}] enter", id);
}
fn peterson_exit_critical(id: usize) {
vstore!(&FLAG[id], false);
println!("Thread[{}] exit", id);
}
pub fn thread_fn(id: usize) -> ! {
println!("Thread[{}] init.", id);
let peer_id: usize = id ^ 1;
for _ in 0..N {
peterson_enter_critical(id, peer_id);
critical_test_enter();
for _ in 0..3 {
critical_test_claim();
sleep(2);
}
critical_test_exit();
peterson_exit_critical(id);
}
exit(0)
}
#[no_mangle]
pub fn main() -> i32 {
let mut v = Vec::new();
v.push(thread_create(thread_fn as usize, 0));
// v.push(thread_create(thread_fn as usize, 1));
for tid in v.iter() {
let exit_code = waittid(*tid as usize);
assert_eq!(exit_code, 0, "thread conflict happened!");
println!("thread#{} exited with code {}", tid, exit_code);
}
println!("main thread exited.");
0
}

5
user/src/bin/race_adder_arg.rs
View File

@ -34,7 +34,10 @@ pub fn main(argc: usize, argv: &[&str]) -> i32 {
} else if argc == 2 {
count = argv[1].to_string().parse::<usize>().unwrap();
} else {
println!("ERROR in argv");
println!(
"ERROR in argv, argc is {}, argv[0] {} , argv[1] {} , argv[2] {}",
argc, argv[0], argv[1], argv[2]
);
exit(-1);
}

2
user/src/bin/run_pipe_test.rs
View File

@ -8,7 +8,7 @@ use user_lib::{exec, fork, wait};
#[no_mangle]
pub fn main() -> i32 {
for i in 0..1000 {
for i in 0..50 {
if fork() == 0 {
exec("pipe_large_test\0", &[core::ptr::null::<u8>()]);
} else {

134
user/src/bin/usertests.rs
View File

@ -4,40 +4,134 @@
#[macro_use]
extern crate user_lib;
static TESTS: &[&str] = &[
"exit\0",
"fantastic_text\0",
"forktest\0",
"forktest2\0",
"forktest_simple\0",
"hello_world\0",
"matrix\0",
"sleep\0",
"sleep_simple\0",
"stack_overflow\0",
"yield\0",
// not in SUCC_TESTS & FAIL_TESTS
// count_lines, infloop, user_shell, usertests
// item of TESTS : app_name(argv_0), argv_1, argv_2, argv_3, exit_code
static SUCC_TESTS: &[(&str, &str, &str, &str, i32)] = &[
("filetest_simple\0", "\0", "\0", "\0", 0),
("cat\0", "filea\0", "\0", "\0", 0),
("cmdline_args\0", "1\0", "2\0", "3\0", 0),
("eisenberg\0", "\0", "\0", "\0", 0),
("exit\0", "\0", "\0", "\0", 0),
("fantastic_text\0", "\0", "\0", "\0", 0),
("forktest_simple\0", "\0", "\0", "\0", 0),
("forktest\0", "\0", "\0", "\0", 0),
("forktest2\0", "\0", "\0", "\0", 0),
("forktree\0", "\0", "\0", "\0", 0),
("hello_world\0", "\0", "\0", "\0", 0),
("huge_write\0", "\0", "\0", "\0", 0),
("matrix\0", "\0", "\0", "\0", 0),
("mpsc_sem\0", "\0", "\0", "\0", 0),
("peterson\0", "\0", "\0", "\0", 0),
("phil_din_mutex\0", "\0", "\0", "\0", 0),
("pipe_large_test\0", "\0", "\0", "\0", 0),
("pipetest\0", "\0", "\0", "\0", 0),
("race_adder_arg\0", "3\0", "\0", "\0", 0),
("race_adder_atomic\0", "\0", "\0", "\0", 0),
("race_adder_mutex_blocking\0", "\0", "\0", "\0", 0),
("race_adder_mutex_spin\0", "\0", "\0", "\0", 0),
("run_pipe_test\0", "\0", "\0", "\0", 0),
("sleep_simple\0", "\0", "\0", "\0", 0),
("sleep\0", "\0", "\0", "\0", 0),
("sleep_simple\0", "\0", "\0", "\0", 0),
("sync_sem\0", "\0", "\0", "\0", 0),
("test_condvar\0", "\0", "\0", "\0", 0),
("threads_arg\0", "\0", "\0", "\0", 0),
("threads\0", "\0", "\0", "\0", 0),
("yield\0", "\0", "\0", "\0", 0),
];
static FAIL_TESTS: &[(&str, &str, &str, &str, i32)] = &[
("stack_overflow\0", "\0", "\0", "\0", -11),
("race_adder_loop\0", "\0", "\0", "\0", -6),
("priv_csr\0", "\0", "\0", "\0", -4),
("priv_inst\0", "\0", "\0", "\0", -4),
("store_fault\0", "\0", "\0", "\0", -11),
("until_timeout\0", "\0", "\0", "\0", -6),
("race_adder\0", "\0", "\0", "\0", -6),
("huge_write_mt\0", "\0", "\0", "\0", -6),
];
use user_lib::{exec, fork, waitpid};
#[no_mangle]
pub fn main() -> i32 {
for test in TESTS {
println!("Usertests: Running {}", test);
fn run_tests(tests: &[(&str, &str, &str, &str, i32)]) -> i32 {
let mut pass_num = 0;
let mut arr: [*const u8; 4] = [
core::ptr::null::<u8>(),
core::ptr::null::<u8>(),
core::ptr::null::<u8>(),
core::ptr::null::<u8>(),
];
for test in tests {
println!("Usertests: Running {}", test.0);
arr[0] = test.0.as_ptr();
if test.1 != "\0" {
arr[1] = test.1.as_ptr();
arr[2] = core::ptr::null::<u8>();
arr[3] = core::ptr::null::<u8>();
if test.2 != "\0" {
arr[2] = test.2.as_ptr();
arr[3] = core::ptr::null::<u8>();
if test.3 != "\0" {
arr[3] = test.3.as_ptr();
} else {
arr[3] = core::ptr::null::<u8>();
}
} else {
arr[2] = core::ptr::null::<u8>();
arr[3] = core::ptr::null::<u8>();
}
} else {
arr[1] = core::ptr::null::<u8>();
arr[2] = core::ptr::null::<u8>();
arr[3] = core::ptr::null::<u8>();
}
let pid = fork();
if pid == 0 {
exec(*test, &[core::ptr::null::<u8>()]);
exec(test.0, &arr[..]);
panic!("unreachable!");
} else {
let mut exit_code: i32 = Default::default();
let wait_pid = waitpid(pid as usize, &mut exit_code);
assert_eq!(pid, wait_pid);
if exit_code == test.4 {
// summary apps with exit_code
pass_num = pass_num + 1;
}
println!(
"\x1b[32mUsertests: Test {} in Process {} exited with code {}\x1b[0m",
test, pid, exit_code
test.0, pid, exit_code
);
}
}
println!("Usertests passed!");
0
pass_num
}
#[no_mangle]
pub fn main() -> i32 {
let succ_num = run_tests(SUCC_TESTS);
let err_num = run_tests(FAIL_TESTS);
if succ_num == SUCC_TESTS.len() as i32 && err_num == FAIL_TESTS.len() as i32 {
println!("{} of sueecssed apps, {} of failed apps run correctly. \nUsertests passed!", SUCC_TESTS.len(), FAIL_TESTS.len() );
return 0;
}
if succ_num != SUCC_TESTS.len() as i32 {
println!(
"all successed app_num is {} , but only passed {}",
SUCC_TESTS.len(),
succ_num
);
}
if err_num != FAIL_TESTS.len() as i32 {
println!(
"all failed app_num is {} , but only passed {}",
FAIL_TESTS.len(),
err_num
);
}
println!(" Usertests failed!");
return -1;
}

22
user/src/lib.rs
View File

@ -2,6 +2,7 @@
#![feature(linkage)]
#![feature(panic_info_message)]
#![feature(alloc_error_handler)]
#![feature(core_intrinsics)]
#[macro_use]
pub mod console;
@ -197,3 +198,24 @@ pub fn condvar_signal(condvar_id: usize) {
pub fn condvar_wait(condvar_id: usize, mutex_id: usize) {
sys_condvar_wait(condvar_id, mutex_id);
}
#[macro_export]
macro_rules! vstore {
($var_ref: expr, $value: expr) => {
unsafe { core::intrinsics::volatile_store($var_ref as *const _ as _, $value) }
};
}
#[macro_export]
macro_rules! vload {
($var_ref: expr) => {
unsafe { core::intrinsics::volatile_load($var_ref as *const _ as _) }
};
}
#[macro_export]
macro_rules! memory_fence {
() => {
core::sync::atomic::fence(core::sync::atomic::Ordering::SeqCst)
};
}

4
user/src/syscall.rs
View File

@ -1,5 +1,3 @@
use core::arch::asm;
const SYSCALL_DUP: usize = 24;
const SYSCALL_OPEN: usize = 56;
const SYSCALL_CLOSE: usize = 57;
@ -31,7 +29,7 @@ const SYSCALL_CONDVAR_WAIT: usize = 1032;
fn syscall(id: usize, args: [usize; 3]) -> isize {
let mut ret: isize;
unsafe {
asm!(
core::arch::asm!(
"ecall",
inlateout("x10") args[0] => ret,
in("x11") args[1],