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 42 use mm::allocator::KernelAllocator; 43 44 // <3> 45 use crate::{ 46 arch::asm::current::current_pcb, 47 include::bindings::bindings::{process_do_exit, BLACK, GREEN}, 48 }; 49 50 // 声明全局的slab分配器 51 #[cfg_attr(not(test), global_allocator)] 52 pub static KERNEL_ALLOCATOR: KernelAllocator = KernelAllocator {}; 53 54 /// 全局的panic处理函数 55 #[panic_handler] 56 #[no_mangle] 57 pub fn panic(info: &PanicInfo) -> ! { 58 kerror!("Kernel Panic Occurred."); 59 60 match info.location() { 61 Some(loc) => { 62 println!( 63 "Location:\n\tFile: {}\n\tLine: {}, Column: {}", 64 loc.file(), 65 loc.line(), 66 loc.column() 67 ); 68 } 69 None => { 70 println!("No location info"); 71 } 72 } 73 74 match info.message() { 75 Some(msg) => { 76 println!("Message:\n\t{}", msg); 77 } 78 None => { 79 println!("No panic message."); 80 } 81 } 82 83 println!("Current PCB:\n\t{:?}", current_pcb()); 84 unsafe { 85 process_do_exit(u64::MAX); 86 }; 87 loop {} 88 } 89 90 /// 该函数用作测试，在process.c的initial_kernel_thread()中调用了此函数 91 #[no_mangle] 92 pub extern "C" fn __rust_demo_func() -> i32 { 93 printk_color!(GREEN, BLACK, "__rust_demo_func()\n"); 94 95 return 0; 96 } 97