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(cstr_from_bytes_until_nul)] 11 #![feature(c_void_variant)] 12 #![feature(drain_filter)] 13 #![feature(inline_const)] 14 #![feature(is_some_and)] 15 #![feature(naked_functions)] 16 #![feature(panic_info_message)] 17 #![feature(ptr_internals)] 18 #![feature(trait_upcasting)] 19 #![feature(slice_ptr_get)] 20 #![feature(vec_into_raw_parts)] 21 #![feature(new_uninit)] 22 #![feature(ptr_to_from_bits)] 23 #![feature(concat_idents)] 24 #![cfg_attr(target_os = "none", no_std)] 25 #![feature(atomic_mut_ptr)] 26 27 #[cfg(test)] 28 #[macro_use] 29 extern crate std; 30 31 #[allow(non_upper_case_globals)] 32 #[allow(non_camel_case_types)] 33 #[allow(non_snake_case)] 34 use core::panic::PanicInfo; 35 36 /// 导出x86_64架构相关的代码，命名为arch模块 37 #[macro_use] 38 mod arch; 39 #[macro_use] 40 mod libs; 41 #[macro_use] 42 mod include; 43 mod debug; 44 mod driver; // 如果driver依赖了libs，应该在libs后面导出 45 mod exception; 46 mod filesystem; 47 mod init; 48 mod ipc; 49 mod mm; 50 mod net; 51 mod process; 52 mod sched; 53 mod smp; 54 mod syscall; 55 mod time; 56 mod virt; 57 58 #[macro_use] 59 extern crate alloc; 60 #[macro_use] 61 extern crate atomic_enum; 62 #[macro_use] 63 extern crate bitflags; 64 extern crate elf; 65 #[macro_use] 66 extern crate lazy_static; 67 extern crate num; 68 #[macro_use] 69 extern crate num_derive; 70 extern crate smoltcp; 71 #[macro_use] 72 extern crate intertrait; 73 #[cfg(target_arch = "x86_64")] 74 extern crate x86; 75 76 extern crate klog_types; 77 78 use crate::mm::allocator::kernel_allocator::KernelAllocator; 79 80 use crate::process::ProcessManager; 81 82 #[cfg(feature = "backtrace")] 83 extern crate mini_backtrace; 84 85 extern "C" { 86 fn lookup_kallsyms(addr: u64, level: i32) -> i32; 87 } 88 89 // 声明全局的分配器 90 #[cfg_attr(not(test), global_allocator)] 91 pub static KERNEL_ALLOCATOR: KernelAllocator = KernelAllocator; 92 93 /// 全局的panic处理函数 94 #[cfg(target_os = "none")] 95 #[panic_handler] 96 #[no_mangle] 97 pub fn panic(info: &PanicInfo) -> ! { 98 kerror!("Kernel Panic Occurred."); 99 100 match info.location() { 101 Some(loc) => { 102 println!( 103 "Location:\n\tFile: {}\n\tLine: {}, Column: {}", 104 loc.file(), 105 loc.line(), 106 loc.column() 107 ); 108 } 109 None => { 110 println!("No location info"); 111 } 112 } 113 114 match info.message() { 115 Some(msg) => { 116 println!("Message:\n\t{}", msg); 117 } 118 None => { 119 println!("No panic message."); 120 } 121 } 122 123 #[cfg(feature = "backtrace")] 124 { 125 unsafe { 126 let bt = mini_backtrace::Backtrace::<16>::capture(); 127 println!("Rust Panic Backtrace:"); 128 let mut level = 0; 129 for frame in bt.frames { 130 lookup_kallsyms(frame as u64, level); 131 level += 1; 132 } 133 }; 134 } 135 136 println!("Current PCB:\n\t{:?}", *(ProcessManager::current_pcb())); 137 ProcessManager::exit(usize::MAX); 138 } 139