Compare commits
30 Commits
| Author | SHA1 | Date |
|---|---|---|
Yu Chen
|
7808ae565f | 4 years ago |
chyyuu
|
fbe68da76e | 4 years ago |
zhanghx0905
|
7269c4477e | 4 years ago |
Yifan Wu
|
98773230f6 | 4 years ago |
|
Yifan Wu
|
6d550620b1 | 4 years ago |
|
Yu Chen
|
9f5ed6adb4 | 4 years ago |
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Yifan Wu
|
3e87558e5d | 4 years ago |
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Yifan Wu
|
bcaf55687e | 4 years ago |
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Yifan Wu
|
94387ed9dd | 4 years ago |
|
Yifan Wu
|
58ad2b1c3a | 4 years ago |
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Yifan Wu
|
f8ff7ab228 | 4 years ago |
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Yifan Wu
|
4f834ef5c9 | 4 years ago |
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Yifan Wu
|
19c6265ed5 | 4 years ago |
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Yifan Wu
|
579e83899a | 4 years ago |
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Yifan Wu
|
77f8e89306 | 4 years ago |
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Yifan Wu
|
85f7beae74 | 4 years ago |
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Yifan Wu
|
5369766b96 | 4 years ago |
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Yifan Wu
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d71a18ad63 | 4 years ago |
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Yifan Wu
|
0305a62a76 | 4 years ago |
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Yifan Wu
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17edea929b | 4 years ago |
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Yifan Wu
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2bccb014b4 | 5 years ago |
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Yifan Wu
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75a9b0a80d | 5 years ago |
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Yifan Wu
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e9717e1052 | 5 years ago |
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Yifan Wu
|
721abe99c4 | 5 years ago |
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Yifan Wu
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9438782996 | 5 years ago |
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Yifan Wu
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cfed8cb75c | 5 years ago |
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Yu Chen
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9c50d7b2e2 | 5 years ago |
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Yifan Wu
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335027f00b | 5 years ago |
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Yifan Wu
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df70bd8dcb | 5 years ago |
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Yifan Wu
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ee1a063d42 | 5 years ago |
@ -0,0 +1 @@
|
||||
*/*
|
||||
@ -1,6 +1,16 @@
|
||||
.idea/*
|
||||
os/target/*
|
||||
os/.idea/*
|
||||
.idea
|
||||
Cargo.lock
|
||||
target
|
||||
os/src/link_app.S
|
||||
os/last-*
|
||||
os/Cargo.lock
|
||||
user/build
|
||||
user/target/*
|
||||
user/.idea/*
|
||||
user/.idea/*
|
||||
user/Cargo.lock
|
||||
easy-fs/Cargo.lock
|
||||
easy-fs/target/*
|
||||
easy-fs-fuse/Cargo.lock
|
||||
easy-fs-fuse/target/*
|
||||
tools/
|
||||
pushall.sh
|
||||
@ -0,0 +1,40 @@
|
||||
FROM ubuntu:18.04
|
||||
LABEL maintainer="dinghao188" \
|
||||
version="1.1" \
|
||||
description="ubuntu 18.04 with tools for tsinghua's rCore-Tutorial-V3"
|
||||
|
||||
#install some deps
|
||||
RUN set -x \
|
||||
&& apt-get update \
|
||||
&& apt-get install -y curl wget autoconf automake autotools-dev curl libmpc-dev libmpfr-dev libgmp-dev \
|
||||
gawk build-essential bison flex texinfo gperf libtool patchutils bc xz-utils \
|
||||
zlib1g-dev libexpat-dev pkg-config libglib2.0-dev libpixman-1-dev git tmux python3
|
||||
|
||||
#install rust and qemu
|
||||
RUN set -x; \
|
||||
RUSTUP='/root/rustup.sh' \
|
||||
&& cd $HOME \
|
||||
#install rust
|
||||
&& curl https://sh.rustup.rs -sSf > $RUSTUP && chmod +x $RUSTUP \
|
||||
&& $RUSTUP -y --default-toolchain nightly --profile minimal \
|
||||
|
||||
#compile qemu
|
||||
&& wget https://ftp.osuosl.org/pub/blfs/conglomeration/qemu/qemu-5.0.0.tar.xz \
|
||||
&& tar xvJf qemu-5.0.0.tar.xz \
|
||||
&& cd qemu-5.0.0 \
|
||||
&& ./configure --target-list=riscv64-softmmu,riscv64-linux-user \
|
||||
&& make -j$(nproc) install \
|
||||
&& cd $HOME && rm -rf qemu-5.0.0 qemu-5.0.0.tar.xz
|
||||
|
||||
#for chinese network
|
||||
RUN set -x; \
|
||||
APT_CONF='/etc/apt/sources.list'; \
|
||||
CARGO_CONF='/root/.cargo/config'; \
|
||||
BASHRC='/root/.bashrc' \
|
||||
&& echo 'export RUSTUP_DIST_SERVER=https://mirrors.ustc.edu.cn/rust-static' >> $BASHRC \
|
||||
&& echo 'export RUSTUP_UPDATE_ROOT=https://mirrors.ustc.edu.cn/rust-static/rustup' >> $BASHRC \
|
||||
&& touch $CARGO_CONF \
|
||||
&& echo '[source.crates-io]' > $CARGO_CONF \
|
||||
&& echo "replace-with = 'ustc'" >> $CARGO_CONF \
|
||||
&& echo '[source.ustc]' >> $CARGO_CONF \
|
||||
&& echo 'registry = "git://mirrors.ustc.edu.cn/crates.io-index"' >> $CARGO_CONF
|
||||
@ -0,0 +1,8 @@
|
||||
DOCKER_NAME ?= dinghao188/rcore-tutorial
|
||||
.PHONY: docker build_docker
|
||||
|
||||
docker:
|
||||
docker run --rm -it --mount type=bind,source=$(shell pwd),destination=/mnt ${DOCKER_NAME}
|
||||
|
||||
build_docker:
|
||||
docker build -t ${DOCKER_NAME} .
|
||||
@ -1,2 +1,67 @@
|
||||
# rCore-Tutorial-v3
|
||||
rCore-Tutorial version 3.
|
||||
rCore-Tutorial version 3.5. See the [Documentation in Chinese](https://rcore-os.github.io/rCore-Tutorial-Book-v3/).
|
||||
|
||||
## news
|
||||
- 2021.11.20: Now we are updating our labs. Please checkout chX-dev Branches for our current new labs. (Notice: please see the [Dependency] section in the end of this doc)
|
||||
|
||||
## Overview
|
||||
|
||||
This project aims to show how to write an **Unix-like OS** running on **RISC-V** platforms **from scratch** in **[Rust](https://www.rust-lang.org/)** for **beginners** without any background knowledge about **computer architectures, assembly languages or operating systems**.
|
||||
|
||||
## Features
|
||||
|
||||
* Platform supported: `qemu-system-riscv64` simulator or dev boards based on [Kendryte K210 SoC](https://canaan.io/product/kendryteai) such as [Maix Dock](https://www.seeedstudio.com/Sipeed-MAIX-Dock-p-4815.html)
|
||||
* OS
|
||||
* concurrency of multiple processes
|
||||
* preemptive scheduling(Round-Robin algorithm)
|
||||
* dynamic memory management in kernel
|
||||
* virtual memory
|
||||
* a simple file system with a block cache
|
||||
* an interactive shell in the userspace
|
||||
* **only 4K+ LoC**
|
||||
* [A detailed documentation in Chinese](https://rcore-os.github.io/rCore-Tutorial-Book-v3/) in spite of the lack of comments in the code(English version is not available at present)
|
||||
|
||||
## Run our project
|
||||
|
||||
TODO:
|
||||
|
||||
## Working in progress
|
||||
|
||||
Now we are still updating our project, you can find latest changes on branches `chX-dev` such as `ch1-dev`. We are intended to publish first release 3.5.0 after completing most of the tasks mentioned below.
|
||||
|
||||
Overall progress: ch7
|
||||
|
||||
### Completed
|
||||
|
||||
* [x] automatically clean up and rebuild before running our project on a different platform
|
||||
* [x] fix `power` series application in early chapters, now you can find modulus in the output
|
||||
* [x] use `UPSafeCell` instead of `RefCell` or `spin::Mutex` in order to access static data structures and adjust its API so that it cannot be borrowed twice at a time(mention `& .exclusive_access().task[0]` in `run_first_task`)
|
||||
* [x] move `TaskContext` into `TaskControlBlock` instead of restoring it in place on kernel stack(since ch3), eliminating annoying `task_cx_ptr2`
|
||||
* [x] replace `llvm_asm!` with `asm!`
|
||||
* [x] expand the fs image size generated by `rcore-fs-fuse` to 128MiB
|
||||
* [x] add a new test named `huge_write` which evaluates the fs performance(qemu\~500KiB/s k210\~50KiB/s)
|
||||
* [x] flush all block cache to disk after a fs transaction which involves write operation
|
||||
* [x] replace `spin::Mutex` with `UPSafeCell` before SMP chapter
|
||||
* [x] add codes for a new chapter about synchronization & mutual exclusion(uniprocessor only)
|
||||
|
||||
### Todo(High priority)
|
||||
|
||||
* [ ] support Allwinner's RISC-V D1 chip
|
||||
* [ ] bug fix: we should call `find_pte` rather than `find_pte_create` in `PageTable::unmap`
|
||||
* [ ] bug fix: check validity of level-3 pte in `find_pte` instead of checking it outside this function
|
||||
* [ ] use old fs image optionally, do not always rebuild the image
|
||||
* [ ] add new system calls: getdents64/fstat
|
||||
* [ ] shell functionality improvement(to be continued...)
|
||||
* [ ] give every non-zero process exit code an unique and clear error type
|
||||
* [ ] effective error handling of mm module
|
||||
|
||||
### Todo(Low priority)
|
||||
|
||||
* [ ] rewrite practice doc and remove some inproper questions
|
||||
* [ ] provide smooth debug experience at a Rust source code level
|
||||
* [ ] format the code using official tools
|
||||
|
||||
|
||||
### Crates
|
||||
|
||||
We will add them later.
|
||||
|
||||
Binary file not shown.
Binary file not shown.
@ -0,0 +1,18 @@
|
||||
# rCore-Tutorial-v3
|
||||
rCore-Tutorial version 3.x
|
||||
|
||||
## Dependency
|
||||
|
||||
### Binaries
|
||||
|
||||
* rustc: 1.57.0-nightly (e1e9319d9 2021-10-14)
|
||||
|
||||
* cargo-binutils: 0.3.3
|
||||
|
||||
* qemu: 5.0.0
|
||||
|
||||
* rustsbi-lib: 0.2.0-alpha.4
|
||||
|
||||
rustsbi-qemu: d4968dd2
|
||||
|
||||
rustsbi-k210: b689314e
|
||||
@ -1,132 +0,0 @@
|
||||
# This file is automatically @generated by Cargo.
|
||||
# It is not intended for manual editing.
|
||||
[[package]]
|
||||
name = "aho-corasick"
|
||||
version = "0.7.15"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
|
||||
dependencies = [
|
||||
"memchr",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "bare-metal"
|
||||
version = "0.2.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5deb64efa5bd81e31fcd1938615a6d98c82eafcbcd787162b6f63b91d6bac5b3"
|
||||
dependencies = [
|
||||
"rustc_version",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "bit_field"
|
||||
version = "0.10.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "dcb6dd1c2376d2e096796e234a70e17e94cc2d5d54ff8ce42b28cef1d0d359a4"
|
||||
|
||||
[[package]]
|
||||
name = "bitflags"
|
||||
version = "1.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
|
||||
|
||||
[[package]]
|
||||
name = "lazy_static"
|
||||
version = "1.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
|
||||
dependencies = [
|
||||
"spin",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "memchr"
|
||||
version = "2.3.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
|
||||
|
||||
[[package]]
|
||||
name = "os"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"lazy_static",
|
||||
"riscv",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex"
|
||||
version = "1.4.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "38cf2c13ed4745de91a5eb834e11c00bcc3709e773173b2ce4c56c9fbde04b9c"
|
||||
dependencies = [
|
||||
"aho-corasick",
|
||||
"memchr",
|
||||
"regex-syntax",
|
||||
"thread_local",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex-syntax"
|
||||
version = "0.6.21"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3b181ba2dcf07aaccad5448e8ead58db5b742cf85dfe035e2227f137a539a189"
|
||||
|
||||
[[package]]
|
||||
name = "riscv"
|
||||
version = "0.6.0"
|
||||
source = "git+https://github.com/rcore-os/riscv#21e32ee1dc786cc0d5006ceee0040ce4f8398575"
|
||||
dependencies = [
|
||||
"bare-metal",
|
||||
"bit_field",
|
||||
"bitflags",
|
||||
"riscv-target",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "riscv-target"
|
||||
version = "0.1.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "88aa938cda42a0cf62a20cfe8d139ff1af20c2e681212b5b34adb5a58333f222"
|
||||
dependencies = [
|
||||
"lazy_static",
|
||||
"regex",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rustc_version"
|
||||
version = "0.2.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
|
||||
dependencies = [
|
||||
"semver",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "semver"
|
||||
version = "0.9.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
|
||||
dependencies = [
|
||||
"semver-parser",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "semver-parser"
|
||||
version = "0.7.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
|
||||
|
||||
[[package]]
|
||||
name = "spin"
|
||||
version = "0.5.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
|
||||
|
||||
[[package]]
|
||||
name = "thread_local"
|
||||
version = "1.0.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
|
||||
dependencies = [
|
||||
"lazy_static",
|
||||
]
|
||||
@ -0,0 +1,48 @@
|
||||
OUTPUT_ARCH(riscv)
|
||||
ENTRY(_start)
|
||||
BASE_ADDRESS = 0x80200000;
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
. = BASE_ADDRESS;
|
||||
skernel = .;
|
||||
|
||||
stext = .;
|
||||
.text : {
|
||||
*(.text.entry)
|
||||
*(.text .text.*)
|
||||
}
|
||||
|
||||
. = ALIGN(4K);
|
||||
etext = .;
|
||||
srodata = .;
|
||||
.rodata : {
|
||||
*(.rodata .rodata.*)
|
||||
*(.srodata .srodata.*)
|
||||
}
|
||||
|
||||
. = ALIGN(4K);
|
||||
erodata = .;
|
||||
sdata = .;
|
||||
.data : {
|
||||
*(.data .data.*)
|
||||
*(.sdata .sdata.*)
|
||||
}
|
||||
|
||||
. = ALIGN(4K);
|
||||
edata = .;
|
||||
.bss : {
|
||||
*(.bss.stack)
|
||||
sbss = .;
|
||||
*(.bss .bss.*)
|
||||
*(.sbss .sbss.*)
|
||||
}
|
||||
|
||||
. = ALIGN(4K);
|
||||
ebss = .;
|
||||
ekernel = .;
|
||||
|
||||
/DISCARD/ : {
|
||||
*(.eh_frame)
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,3 @@
|
||||
mod up;
|
||||
|
||||
pub use up::UPSafeCell;
|
||||
@ -0,0 +1,27 @@
|
||||
use core::cell::{RefCell, RefMut};
|
||||
|
||||
/// Wrap a static data structure inside it so that we are
|
||||
/// able to access it without any `unsafe`.
|
||||
///
|
||||
/// We should only use it in uniprocessor.
|
||||
///
|
||||
/// In order to get mutable reference of inner data, call
|
||||
/// `exclusive_access`.
|
||||
pub struct UPSafeCell<T> {
|
||||
/// inner data
|
||||
inner: RefCell<T>,
|
||||
}
|
||||
|
||||
unsafe impl<T> Sync for UPSafeCell<T> {}
|
||||
|
||||
impl<T> UPSafeCell<T> {
|
||||
/// User is responsible to guarantee that inner struct is only used in
|
||||
/// uniprocessor.
|
||||
pub unsafe fn new(value: T) -> Self {
|
||||
Self { inner: RefCell::new(value) }
|
||||
}
|
||||
/// Panic if the data has been borrowed.
|
||||
pub fn exclusive_access(&self) -> RefMut<'_, T> {
|
||||
self.inner.borrow_mut()
|
||||
}
|
||||
}
|
||||
@ -1,6 +1,6 @@
|
||||
use crate::batch::run_next_app;
|
||||
|
||||
pub fn sys_exit(xstate: i32) -> ! {
|
||||
println!("[kernel] Application exited with code {}", xstate);
|
||||
pub fn sys_exit(exit_code: i32) -> ! {
|
||||
println!("[kernel] Application exited with code {}", exit_code);
|
||||
run_next_app()
|
||||
}
|
||||
@ -1 +1 @@
|
||||
nightly-2020-11-01
|
||||
nightly-2021-10-15
|
||||
|
||||
File diff suppressed because one or more lines are too long
@ -1,5 +0,0 @@
|
||||
# This file is automatically @generated by Cargo.
|
||||
# It is not intended for manual editing.
|
||||
[[package]]
|
||||
name = "user_lib"
|
||||
version = "0.1.0"
|
||||
@ -1,11 +0,0 @@
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
|
||||
#[macro_use]
|
||||
extern crate user_lib;
|
||||
|
||||
#[no_mangle]
|
||||
fn main() -> i32 {
|
||||
println!("Hello, world!");
|
||||
0
|
||||
}
|
||||
@ -1,14 +0,0 @@
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
#![feature(llvm_asm)]
|
||||
|
||||
#[macro_use]
|
||||
extern crate user_lib;
|
||||
|
||||
#[no_mangle]
|
||||
fn main() -> i32 {
|
||||
println!("Into Test store_fault, we will insert an invalid store operation...");
|
||||
println!("Kernel should kill this application!");
|
||||
unsafe { (0x0 as *mut u8).write_volatile(0); }
|
||||
0
|
||||
}
|
||||
@ -0,0 +1,17 @@
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
#![feature(asm)]
|
||||
|
||||
extern crate user_lib;
|
||||
|
||||
/// 由于 rustsbi 的问题，该程序无法正确退出
|
||||
/// > rustsbi 0.2.0-alpha.1 已经修复，可以正常退出
|
||||
|
||||
#[no_mangle]
|
||||
pub fn main() -> isize {
|
||||
unsafe {
|
||||
#[allow(clippy::zero_ptr)]
|
||||
(0x0 as *mut u8).write_volatile(0);
|
||||
}
|
||||
panic!("FAIL: T.T\n");
|
||||
}
|
||||
@ -0,0 +1,16 @@
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
#![feature(asm)]
|
||||
|
||||
extern crate user_lib;
|
||||
|
||||
/// 由于 rustsbi 的问题，该程序无法正确退出
|
||||
/// > rustsbi 0.2.0-alpha.1 已经修复，可以正常退出
|
||||
|
||||
#[no_mangle]
|
||||
pub fn main() -> ! {
|
||||
unsafe {
|
||||
asm!("sret");
|
||||
}
|
||||
panic!("FAIL: T.T\n");
|
||||
}
|
||||
@ -0,0 +1,17 @@
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
#![feature(asm)]
|
||||
|
||||
extern crate user_lib;
|
||||
|
||||
/// 由于 rustsbi 的问题，该程序无法正确退出
|
||||
/// > rustsbi 0.2.0-alpha.1 已经修复，可以正常退出
|
||||
|
||||
#[no_mangle]
|
||||
pub fn main() -> ! {
|
||||
let mut sstatus: usize;
|
||||
unsafe {
|
||||
asm!("csrr {}, sstatus", out(reg) sstatus);
|
||||
}
|
||||
panic!("(-_-) I get sstatus:{:x}\n", sstatus);
|
||||
}
|
||||
@ -0,0 +1,15 @@
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
#![feature(asm)]
|
||||
|
||||
#[macro_use]
|
||||
extern crate user_lib;
|
||||
|
||||
/// 正确输出：
|
||||
/// Hello world from user mode program!
|
||||
|
||||
#[no_mangle]
|
||||
fn main() -> i32 {
|
||||
println!("Hello, world from user mode program!");
|
||||
0
|
||||
}
|
||||
@ -0,0 +1,53 @@
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
#![feature(asm)]
|
||||
|
||||
#[macro_use]
|
||||
extern crate user_lib;
|
||||
extern crate core;
|
||||
use core::slice;
|
||||
use user_lib::{write, STDOUT};
|
||||
|
||||
/// 正确输出：
|
||||
/// Test write0 OK!
|
||||
|
||||
const STACK_SIZE: usize = 0x1000;
|
||||
|
||||
unsafe fn r_sp() -> usize {
|
||||
let mut sp: usize;
|
||||
asm!("mv {}, sp", out(reg) sp);
|
||||
sp
|
||||
}
|
||||
|
||||
unsafe fn stack_range() -> (usize, usize) {
|
||||
let sp = r_sp();
|
||||
let top = (sp + STACK_SIZE - 1) & (!(STACK_SIZE - 1));
|
||||
(top - STACK_SIZE, top)
|
||||
}
|
||||
|
||||
#[no_mangle]
|
||||
pub fn main() -> i32 {
|
||||
assert_eq!(
|
||||
write(STDOUT, unsafe {
|
||||
#[allow(clippy::zero_ptr)]
|
||||
slice::from_raw_parts(0x0 as *const _, 10)
|
||||
}),
|
||||
-1
|
||||
);
|
||||
let (bottom, top) = unsafe { stack_range() };
|
||||
assert_eq!(
|
||||
write(STDOUT, unsafe {
|
||||
slice::from_raw_parts((top - 5) as *const _, 10)
|
||||
}),
|
||||
-1
|
||||
);
|
||||
assert_eq!(
|
||||
write(STDOUT, unsafe {
|
||||
slice::from_raw_parts((bottom - 5) as *const _, 10)
|
||||
}),
|
||||
-1
|
||||
);
|
||||
// TODO: test string located in .data section
|
||||
println!("Test write0 OK!");
|
||||
0
|
||||
}
|
||||
@ -0,0 +1,31 @@
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
|
||||
#[macro_use]
|
||||
extern crate user_lib;
|
||||
use user_lib::{write, STDOUT};
|
||||
const DATA_STRING: &str = "string from data section\n";
|
||||
|
||||
/// 正确输出：
|
||||
/// string from data section
|
||||
/// strinstring from stack section
|
||||
/// strin
|
||||
/// Test write1 OK!
|
||||
|
||||
#[no_mangle]
|
||||
pub fn main() -> i32 {
|
||||
assert_eq!(write(1234, DATA_STRING.as_bytes()), -1);
|
||||
assert_eq!(
|
||||
write(STDOUT, DATA_STRING.as_bytes()),
|
||||
DATA_STRING.len() as isize
|
||||
);
|
||||
assert_eq!(write(STDOUT, &DATA_STRING.as_bytes()[..5]), 5);
|
||||
let stack_string = "string from stack section\n";
|
||||
assert_eq!(
|
||||
write(STDOUT, stack_string.as_bytes()),
|
||||
stack_string.len() as isize
|
||||
);
|
||||
assert_eq!(write(STDOUT, &stack_string.as_bytes()[..5]), 5);
|
||||
println!("\nTest write1 OK!");
|
||||
0
|
||||
}
|
||||
@ -1,10 +1,17 @@
|
||||
use crate::exit;
|
||||
|
||||
#[panic_handler]
|
||||
fn panic_handler(panic_info: &core::panic::PanicInfo) -> ! {
|
||||
let err = panic_info.message().unwrap();
|
||||
if let Some(location) = panic_info.location() {
|
||||
println!("Panicked at {}:{}, {}", location.file(), location.line(), err);
|
||||
println!(
|
||||
"Panicked at {}:{}, {}",
|
||||
location.file(),
|
||||
location.line(),
|
||||
err
|
||||
);
|
||||
} else {
|
||||
println!("Panicked: {}", err);
|
||||
}
|
||||
loop {}
|
||||
}
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
@ -1,25 +1,179 @@
|
||||
pub const STDOUT: usize = 1;
|
||||
use super::{Stat, TimeVal};
|
||||
|
||||
const SYSCALL_WRITE: usize = 64;
|
||||
const SYSCALL_EXIT: usize = 93;
|
||||
pub const SYSCALL_OPENAT: usize = 56;
|
||||
pub const SYSCALL_CLOSE: usize = 57;
|
||||
pub const SYSCALL_READ: usize = 63;
|
||||
pub const SYSCALL_WRITE: usize = 64;
|
||||
pub const SYSCALL_UNLINKAT: usize = 35;
|
||||
pub const SYSCALL_LINKAT: usize = 37;
|
||||
pub const SYSCALL_FSTAT: usize = 80;
|
||||
pub const SYSCALL_EXIT: usize = 93;
|
||||
pub const SYSCALL_YIELD: usize = 124;
|
||||
pub const SYSCALL_GETTIMEOFDAY: usize = 169;
|
||||
pub const SYSCALL_GETPID: usize = 172;
|
||||
pub const SYSCALL_FORK: usize = 220;
|
||||
pub const SYSCALL_EXEC: usize = 221;
|
||||
pub const SYSCALL_WAITPID: usize = 260;
|
||||
pub const SYSCALL_SET_PRIORITY: usize = 140;
|
||||
pub const SYSCALL_MUNMAP: usize = 215;
|
||||
pub const SYSCALL_MMAP: usize = 222;
|
||||
pub const SYSCALL_SPAWN: usize = 400;
|
||||
pub const SYSCALL_MAIL_READ: usize = 401;
|
||||
pub const SYSCALL_MAIL_WRITE: usize = 402;
|
||||
pub const SYSCALL_DUP: usize = 24;
|
||||
pub const SYSCALL_PIPE: usize = 59;
|
||||
|
||||
fn syscall(id: usize, args: [usize; 3]) -> isize {
|
||||
pub fn syscall(id: usize, args: [usize; 3]) -> isize {
|
||||
let mut ret: isize;
|
||||
unsafe {
|
||||
llvm_asm!("ecall"
|
||||
: "={x10}" (ret)
|
||||
: "{x10}" (args[0]), "{x11}" (args[1]), "{x12}" (args[2]), "{x17}" (id)
|
||||
: "memory"
|
||||
: "volatile"
|
||||
asm!(
|
||||
"ecall",
|
||||
inlateout("x10") args[0] => ret,
|
||||
in("x11") args[1],
|
||||
in("x12") args[2],
|
||||
in("x17") id
|
||||
);
|
||||
}
|
||||
ret
|
||||
}
|
||||
|
||||
pub fn syscall6(id: usize, args: [usize; 6]) -> isize {
|
||||
let mut ret: isize;
|
||||
unsafe {
|
||||
asm!(
|
||||
"ecall",
|
||||
inlateout("x10") args[0] => ret,
|
||||
in("x11") args[1],
|
||||
in("x12") args[2],
|
||||
in("x13") args[3],
|
||||
in("x14") args[4],
|
||||
in("x15") args[5],
|
||||
in("x17") id
|
||||
);
|
||||
}
|
||||
ret
|
||||
}
|
||||
|
||||
pub fn sys_openat(dirfd: usize, path: &str, flags: u32, mode: u32) -> isize {
|
||||
syscall6(
|
||||
SYSCALL_OPENAT,
|
||||
[
|
||||
dirfd,
|
||||
path.as_ptr() as usize,
|
||||
flags as usize,
|
||||
mode as usize,
|
||||
0,
|
||||
0,
|
||||
],
|
||||
)
|
||||
}
|
||||
|
||||
pub fn sys_close(fd: usize) -> isize {
|
||||
syscall(SYSCALL_CLOSE, [fd, 0, 0])
|
||||
}
|
||||
|
||||
pub fn sys_read(fd: usize, buffer: &mut [u8]) -> isize {
|
||||
syscall(
|
||||
SYSCALL_READ,
|
||||
[fd, buffer.as_mut_ptr() as usize, buffer.len()],
|
||||
)
|
||||
}
|
||||
|
||||
pub fn sys_write(fd: usize, buffer: &[u8]) -> isize {
|
||||
syscall(SYSCALL_WRITE, [fd, buffer.as_ptr() as usize, buffer.len()])
|
||||
}
|
||||
|
||||
pub fn sys_exit(xstate: i32) -> isize {
|
||||
syscall(SYSCALL_EXIT, [xstate as usize, 0, 0])
|
||||
pub fn sys_linkat(
|
||||
old_dirfd: usize,
|
||||
old_path: &str,
|
||||
new_dirfd: usize,
|
||||
new_path: &str,
|
||||
flags: usize,
|
||||
) -> isize {
|
||||
syscall6(
|
||||
SYSCALL_LINKAT,
|
||||
[
|
||||
old_dirfd,
|
||||
old_path.as_ptr() as usize,
|
||||
new_dirfd,
|
||||
new_path.as_ptr() as usize,
|
||||
flags,
|
||||
0,
|
||||
],
|
||||
)
|
||||
}
|
||||
|
||||
pub fn sys_unlinkat(dirfd: usize, path: &str, flags: usize) -> isize {
|
||||
syscall(SYSCALL_UNLINKAT, [dirfd, path.as_ptr() as usize, flags])
|
||||
}
|
||||
|
||||
pub fn sys_fstat(fd: usize, st: &Stat) -> isize {
|
||||
syscall(SYSCALL_FSTAT, [fd, st as *const _ as usize, 0])
|
||||
}
|
||||
|
||||
pub fn sys_mail_read(buffer: &mut [u8]) -> isize {
|
||||
syscall(
|
||||
SYSCALL_MAIL_READ,
|
||||
[buffer.as_ptr() as usize, buffer.len(), 0],
|
||||
)
|
||||
}
|
||||
|
||||
pub fn sys_mail_write(pid: usize, buffer: &[u8]) -> isize {
|
||||
syscall(
|
||||
SYSCALL_MAIL_WRITE,
|
||||
[pid, buffer.as_ptr() as usize, buffer.len()],
|
||||
)
|
||||
}
|
||||
|
||||
pub fn sys_exit(exit_code: i32) -> ! {
|
||||
syscall(SYSCALL_EXIT, [exit_code as usize, 0, 0]);
|
||||
panic!("sys_exit never returns!");
|
||||
}
|
||||
|
||||
pub fn sys_yield() -> isize {
|
||||
syscall(SYSCALL_YIELD, [0, 0, 0])
|
||||
}
|
||||
|
||||
pub fn sys_get_time(time: &TimeVal, tz: usize) -> isize {
|
||||
syscall(SYSCALL_GETTIMEOFDAY, [time as *const _ as usize, tz, 0])
|
||||
}
|
||||
|
||||
pub fn sys_getpid() -> isize {
|
||||
syscall(SYSCALL_GETPID, [0, 0, 0])
|
||||
}
|
||||
|
||||
pub fn sys_fork() -> isize {
|
||||
syscall(SYSCALL_FORK, [0, 0, 0])
|
||||
}
|
||||
|
||||
pub fn sys_exec(path: &str) -> isize {
|
||||
syscall(SYSCALL_EXEC, [path.as_ptr() as usize, 0, 0])
|
||||
}
|
||||
|
||||
pub fn sys_waitpid(pid: isize, xstatus: *mut i32) -> isize {
|
||||
syscall(SYSCALL_WAITPID, [pid as usize, xstatus as usize, 0])
|
||||
}
|
||||
|
||||
pub fn sys_set_priority(prio: isize) -> isize {
|
||||
syscall(SYSCALL_SET_PRIORITY, [prio as usize, 0, 0])
|
||||
}
|
||||
|
||||
pub fn sys_mmap(start: usize, len: usize, prot: usize) -> isize {
|
||||
syscall(SYSCALL_MMAP, [start, len, prot])
|
||||
}
|
||||
|
||||
pub fn sys_munmap(start: usize, len: usize) -> isize {
|
||||
syscall(SYSCALL_MUNMAP, [start, len, 0])
|
||||
}
|
||||
|
||||
pub fn sys_spawn(path: &str) -> isize {
|
||||
syscall(SYSCALL_SPAWN, [path.as_ptr() as usize, 0, 0])
|
||||
}
|
||||
|
||||
pub fn sys_dup(fd: usize) -> isize {
|
||||
syscall(SYSCALL_DUP, [fd, 0, 0])
|
||||
}
|
||||
|
||||
pub fn sys_pipe(pipe: &mut [usize]) -> isize {
|
||||
syscall(SYSCALL_PIPE, [pipe.as_mut_ptr() as usize, 0, 0])
|
||||
}
|
||||
|
||||
Loading…
Reference in new issue