Fix broken attributes (#50)

* fix: sync attribute changes by toolchain updates

See rust-lang/rust#134213 for details.

---------

Co-authored-by: John Smith <johnsmith0x3f@gmail.com>

Author: yuanlx27

docs/labs/0x03/tasks.md

@@ -79,20 +79,18 @@
 macro_rules! as_handler {
     ($fn: ident) => {
         paste::item! {
-            #[naked]
+            #[unsafe(naked)]
             pub extern "x86-interrupt" fn [<$fn _handler>](_sf: InterruptStackFrame) {
-                unsafe {
-                    core::arch::naked_asm!("
-                    push rbp
-                    // ...
-                    push r15
-                    call {}
-                    pop r15
-                    // ...
-                    pop rbp
-                    iretq",
-                    sym $fn);
-                }
+                core::arch::naked_asm!("
+                push rbp
+                // ...
+                push r15
+                call {}
+                pop r15
+                // ...
+                pop rbp
+                iretq",
+                sym $fn);
             }
         }
     };

src/0x01/pkg/kernel/src/lib.rs

@@ -1,5 +1,4 @@
 #![no_std]
-#![feature(naked_functions)]
 #![feature(abi_x86_interrupt)]
 #![feature(type_alias_impl_trait)]
 

src/0x02/pkg/kernel/src/lib.rs

@@ -1,6 +1,5 @@
 #![no_std]
 #![allow(dead_code)]
-#![feature(naked_functions)]
 #![feature(abi_x86_interrupt)]
 #![feature(alloc_error_handler)]
 #![feature(type_alias_impl_trait)]

src/0x03/pkg/kernel/src/utils/regs.rs

@@ -46,44 +46,42 @@ impl fmt::Debug for RegistersValue {
 macro_rules! as_handler {
     ($fn: ident) => {
         paste::item! {
-            #[naked]
+            #[unsafe(naked)]
             pub extern "x86-interrupt" fn [<$fn _handler>](_sf: InterruptStackFrame) {
-                unsafe {
-                    core::arch::naked_asm!("
-                    push rbp
-                    push rax
-                    push rbx
-                    push rcx
-                    push rdx
-                    push rsi
-                    push rdi
-                    push r8
-                    push r9
-                    push r10
-                    push r11
-                    push r12
-                    push r13
-                    push r14
-                    push r15
-                    call {}
-                    pop r15
-                    pop r14
-                    pop r13
-                    pop r12
-                    pop r11
-                    pop r10
-                    pop r9
-                    pop r8
-                    pop rdi
-                    pop rsi
-                    pop rdx
-                    pop rcx
-                    pop rbx
-                    pop rax
-                    pop rbp
-                    iretq",
-                    sym $fn);
-                }
+                core::arch::naked_asm!("
+                push rbp
+                push rax
+                push rbx
+                push rcx
+                push rdx
+                push rsi
+                push rdi
+                push r8
+                push r9
+                push r10
+                push r11
+                push r12
+                push r13
+                push r14
+                push r15
+                call {}
+                pop r15
+                pop r14
+                pop r13
+                pop r12
+                pop r11
+                pop r10
+                pop r9
+                pop r8
+                pop rdi
+                pop rsi
+                pop rdx
+                pop rcx
+                pop rbx
+                pop rax
+                pop rbp
+                iretq",
+                sym $fn);
             }
         }
     };