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https://github.com/DragonOS-Community/DragonOS.git
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104 lines
2.3 KiB
Rust
104 lines
2.3 KiB
Rust
#![no_std] // <1>
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#![no_main] // <1>
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#![feature(const_mut_refs)]
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#![feature(core_intrinsics)] // <2>
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#![feature(alloc_error_handler)]
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#![feature(panic_info_message)]
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#![feature(drain_filter)] // 允许Vec的drain_filter特性
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#![feature(c_void_variant)] // used in kernel/src/exception/softirq.rs
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#[allow(non_upper_case_globals)]
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#[allow(non_camel_case_types)]
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#[allow(non_snake_case)]
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use core::panic::PanicInfo;
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/// 导出x86_64架构相关的代码，命名为arch模块
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#[cfg(target_arch = "x86_64")]
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#[path = "arch/x86_64/mod.rs"]
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#[macro_use]
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mod arch;
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#[macro_use]
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mod libs;
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#[macro_use]
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mod include;
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mod driver; // 如果driver依赖了libs，应该在libs后面导出
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mod exception;
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mod filesystem;
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mod io;
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mod ipc;
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mod mm;
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mod net;
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mod process;
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mod sched;
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mod smp;
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mod syscall;
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mod time;
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#[macro_use]
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extern crate alloc;
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#[macro_use]
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extern crate bitflags;
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#[macro_use]
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extern crate lazy_static;
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extern crate num;
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#[macro_use]
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extern crate num_derive;
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extern crate smoltcp;
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extern crate thingbuf;
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use mm::allocator::KernelAllocator;
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// <3>
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use crate::{
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arch::asm::current::current_pcb,
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include::bindings::bindings::{process_do_exit, BLACK, GREEN},
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};
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// 声明全局的slab分配器
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#[cfg_attr(not(test), global_allocator)]
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pub static KERNEL_ALLOCATOR: KernelAllocator = KernelAllocator {};
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/// 全局的panic处理函数
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#[panic_handler]
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#[no_mangle]
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pub fn panic(info: &PanicInfo) -> ! {
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kerror!("Kernel Panic Occurred.");
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match info.location() {
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Some(loc) => {
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println!(
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"Location:\n\tFile: {}\n\tLine: {}, Column: {}",
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loc.file(),
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loc.line(),
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loc.column()
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);
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}
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None => {
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println!("No location info");
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}
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}
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match info.message() {
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Some(msg) => {
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println!("Message:\n\t{}", msg);
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}
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None => {
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println!("No panic message.");
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}
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}
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println!("Current PCB:\n\t{:?}", current_pcb());
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unsafe {
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process_do_exit(u64::MAX);
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};
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loop {}
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}
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/// 该函数用作测试，在process.c的initial_kernel_thread()中调用了此函数
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#[no_mangle]
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pub extern "C" fn __rust_demo_func() -> i32 {
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printk_color!(GREEN, BLACK, "__rust_demo_func()\n");
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return 0;
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}
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