1 #![no_main] // <1> 2 #![feature(alloc_error_handler)] 3 #![feature(allocator_api)] 4 #![feature(arbitrary_self_types)] 5 #![feature(asm_const)] 6 #![feature(const_mut_refs)] 7 #![feature(const_trait_impl)] 8 #![feature(const_refs_to_cell)] 9 #![feature(core_intrinsics)] 10 #![feature(c_void_variant)] 11 #![feature(drain_filter)] 12 #![feature(is_some_and)] 13 #![feature(naked_functions)] 14 #![feature(panic_info_message)] 15 #![feature(ptr_internals)] 16 #![feature(trait_upcasting)] 17 #![feature(slice_ptr_get)] 18 #![feature(vec_into_raw_parts)] 19 #![feature(new_uninit)] 20 #![feature(ptr_to_from_bits)] 21 #![feature(concat_idents)] 22 #![cfg_attr(target_os = "none", no_std)] 23 #![feature(atomic_mut_ptr)] 24 25 #[cfg(test)] 26 #[macro_use] 27 extern crate std; 28 29 #[allow(non_upper_case_globals)] 30 #[allow(non_camel_case_types)] 31 #[allow(non_snake_case)] 32 use core::panic::PanicInfo; 33 34 /// 导出x86_64架构相关的代码，命名为arch模块 35 #[macro_use] 36 mod arch; 37 #[macro_use] 38 mod libs; 39 #[macro_use] 40 mod include; 41 mod driver; // 如果driver依赖了libs，应该在libs后面导出 42 mod exception; 43 mod filesystem; 44 mod init; 45 mod ipc; 46 mod mm; 47 mod net; 48 mod process; 49 mod sched; 50 mod smp; 51 mod syscall; 52 mod time; 53 mod virt; 54 55 #[macro_use] 56 extern crate alloc; 57 #[macro_use] 58 extern crate bitflags; 59 extern crate elf; 60 #[macro_use] 61 extern crate lazy_static; 62 extern crate memoffset; 63 extern crate num; 64 #[macro_use] 65 extern crate num_derive; 66 extern crate smoltcp; 67 extern crate thingbuf; 68 #[macro_use] 69 extern crate intertrait; 70 #[cfg(target_arch = "x86_64")] 71 extern crate x86; 72 73 use crate::mm::allocator::kernel_allocator::KernelAllocator; 74 75 use crate::process::ProcessManager; 76 77 #[cfg(feature = "backtrace")] 78 extern crate mini_backtrace; 79 80 extern "C" { 81 fn lookup_kallsyms(addr: u64, level: i32) -> i32; 82 } 83 84 // 声明全局的分配器 85 #[cfg_attr(not(test), global_allocator)] 86 pub static KERNEL_ALLOCATOR: KernelAllocator = KernelAllocator; 87 88 /// 全局的panic处理函数 89 #[cfg(target_os = "none")] 90 #[panic_handler] 91 #[no_mangle] 92 pub fn panic(info: &PanicInfo) -> ! { 93 kerror!("Kernel Panic Occurred."); 94 95 match info.location() { 96 Some(loc) => { 97 println!( 98 "Location:\n\tFile: {}\n\tLine: {}, Column: {}", 99 loc.file(), 100 loc.line(), 101 loc.column() 102 ); 103 } 104 None => { 105 println!("No location info"); 106 } 107 } 108 109 match info.message() { 110 Some(msg) => { 111 println!("Message:\n\t{}", msg); 112 } 113 None => { 114 println!("No panic message."); 115 } 116 } 117 118 #[cfg(feature = "backtrace")] 119 { 120 unsafe { 121 let bt = mini_backtrace::Backtrace::<16>::capture(); 122 println!("Rust Panic Backtrace:"); 123 let mut level = 0; 124 for frame in bt.frames { 125 lookup_kallsyms(frame as u64, level); 126 level += 1; 127 } 128 }; 129 } 130 131 println!("Current PCB:\n\t{:?}", *(ProcessManager::current_pcb())); 132 ProcessManager::exit(usize::MAX); 133 unreachable!(); 134 } 135