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 #[macro_use] 20 mod libs; 21 #[macro_use] 22 mod include; 23 mod driver; // 如果driver依赖了libs，应该在libs后面导出 24 mod exception; 25 mod filesystem; 26 mod io; 27 mod ipc; 28 mod mm; 29 mod process; 30 mod sched; 31 mod smp; 32 mod time; 33 34 #[macro_use] 35 extern crate alloc; 36 #[macro_use] 37 extern crate lazy_static; 38 39 #[macro_use] 40 extern crate bitflags; 41 extern crate thingbuf; 42 43 use mm::allocator::KernelAllocator; 44 45 // <3> 46 use crate::{ 47 arch::asm::current::current_pcb, 48 include::bindings::bindings::{process_do_exit, BLACK, GREEN}, 49 }; 50 51 // 声明全局的slab分配器 52 #[cfg_attr(not(test), global_allocator)] 53 pub static KERNEL_ALLOCATOR: KernelAllocator = KernelAllocator {}; 54 55 /// 全局的panic处理函数 56 #[panic_handler] 57 #[no_mangle] 58 pub fn panic(info: &PanicInfo) -> ! { 59 kerror!("Kernel Panic Occurred."); 60 61 match info.location() { 62 Some(loc) => { 63 println!( 64 "Location:\n\tFile: {}\n\tLine: {}, Column: {}", 65 loc.file(), 66 loc.line(), 67 loc.column() 68 ); 69 } 70 None => { 71 println!("No location info"); 72 } 73 } 74 75 match info.message() { 76 Some(msg) => { 77 println!("Message:\n\t{}", msg); 78 } 79 None => { 80 println!("No panic message."); 81 } 82 } 83 84 println!("Current PCB:\n\t{:?}", current_pcb()); 85 unsafe { 86 process_do_exit(u64::MAX); 87 }; 88 loop {} 89 } 90 91 /// 该函数用作测试，在process.c的initial_kernel_thread()中调用了此函数 92 #[no_mangle] 93 pub extern "C" fn __rust_demo_func() -> i32 { 94 printk_color!(GREEN, BLACK, "__rust_demo_func()\n"); 95 96 return 0; 97 } 98