Bump to rust nightly-2022-01-01, feature global_asm,asm->stable

os/src/main.rs

 #![no_std]
 #![no_main]
-#![feature(global_asm)]
-#![feature(asm)]
 #![feature(panic_info_message)]
 #![feature(alloc_error_handler)]
 
@@ -24,6 +22,8 @@ mod sync;
 mod mm;
 mod fs;
 
+use core::arch::global_asm;
+
 global_asm!(include_str!("entry.asm"));
 global_asm!(include_str!("link_app.S"));
 

os/src/mm/memory_set.rs

@@ -15,6 +15,7 @@ use crate::config::{
     TRAP_CONTEXT,
     USER_STACK_SIZE
 };
+use core::arch::asm;
 
 extern "C" {
     fn stext();

os/src/sbi.rs

 #![allow(unused)]
 
+use core::arch::asm;
+
 const SBI_SET_TIMER: usize = 0;
 const SBI_CONSOLE_PUTCHAR: usize = 1;
 const SBI_CONSOLE_GETCHAR: usize = 2;

os/src/task/switch.rs

-global_asm!(include_str!("switch.S"));
-
 use super::TaskContext;
+use core::arch::global_asm;
+
+global_asm!(include_str!("switch.S"));
 
 extern "C" {
     pub fn __switch(

os/src/trap/mod.rs

@@ -21,6 +21,7 @@ use crate::task::{
 };
 use crate::timer::set_next_trigger;
 use crate::config::{TRAP_CONTEXT, TRAMPOLINE};
+use core::arch::{global_asm, asm};
 
 global_asm!(include_str!("trap.S"));
 

rust-toolchain

-nightly-2021-12-15
+nightly-2022-01-01

user/src/lib.rs

 #![no_std]
-#![feature(asm)]
 #![feature(linkage)]
 #![feature(panic_info_message)]
 #![feature(alloc_error_handler)]

user/src/syscall.rs

+use core::arch::asm;
+
 const SYSCALL_CLOSE: usize = 57;
 const SYSCALL_PIPE: usize = 59;
 const SYSCALL_READ: usize = 63;