1 #![no_std] // <1> 2 #![no_main] // <1> 3 #![feature(const_mut_refs)] 4 #![feature(core_intrinsics)] // <2> 5 #![feature(alloc_error_handler)] 6 #![feature(panic_info_message)] 7 #![feature(drain_filter)] // 允许Vec的drain_filter特性 8 #![feature(c_void_variant)] // used in kernel/src/exception/softirq.rs 9 #[allow(non_upper_case_globals)] 10 #[allow(non_camel_case_types)] 11 #[allow(non_snake_case)] 12 use core::panic::PanicInfo; 13 14 /// 导出x86_64架构相关的代码，命名为arch模块 15 #[cfg(target_arch = "x86_64")] 16 #[path = "arch/x86_64/mod.rs"] 17 #[macro_use] 18 mod arch; 19 20 mod driver; 21 mod filesystem; 22 #[macro_use] 23 mod include; 24 mod ipc; 25 #[macro_use] 26 mod libs; 27 mod exception; 28 pub mod io; 29 mod mm; 30 mod process; 31 mod sched; 32 mod smp; 33 mod time; 34 35 extern crate alloc; 36 #[macro_use] 37 extern crate lazy_static; 38 39 use mm::allocator::KernelAllocator; 40 41 // <3> 42 use crate::{ 43 arch::asm::current::current_pcb, 44 include::bindings::bindings::{process_do_exit, BLACK, GREEN}, 45 }; 46 47 // 声明全局的slab分配器 48 #[cfg_attr(not(test), global_allocator)] 49 pub static KERNEL_ALLOCATOR: KernelAllocator = KernelAllocator {}; 50 51 /// 全局的panic处理函数 52 #[panic_handler] 53 #[no_mangle] 54 pub fn panic(info: &PanicInfo) -> ! { 55 kerror!("Kernel Panic Occurred."); 56 57 match info.location() { 58 Some(loc) => { 59 println!( 60 "Location:\n\tFile: {}\n\tLine: {}, Column: {}", 61 loc.file(), 62 loc.line(), 63 loc.column() 64 ); 65 } 66 None => { 67 println!("No location info"); 68 } 69 } 70 71 match info.message() { 72 Some(msg) => { 73 println!("Message:\n\t{}", msg); 74 } 75 None => { 76 println!("No panic message."); 77 } 78 } 79 80 println!("Current PCB:\n\t{:?}", current_pcb()); 81 unsafe { 82 process_do_exit(u64::MAX); 83 }; 84 loop {} 85 } 86 87 /// 该函数用作测试，在process.c的initial_kernel_thread()中调用了此函数 88 #[no_mangle] 89 pub extern "C" fn __rust_demo_func() -> i32 { 90 printk_color!(GREEN, BLACK, "__rust_demo_func()\n"); 91 92 return 0; 93 } 94