Merge pull request #88 from ruiqurm/ch2-lab

udpate rust-toolchain: nightly-2022-07-20

os/src/batch.rs

 use lazy_static::*;
 use crate::trap::TrapContext;
 use crate::sync::UPSafeCell;
+use core::arch::asm;
 
 const USER_STACK_SIZE: usize = 4096 * 2;
 const KERNEL_STACK_SIZE: usize = 4096 * 2;

os/src/main.rs

 #![no_std]
 #![no_main]
-#![feature(global_asm)]
-#![feature(asm)]
 #![feature(panic_info_message)]
 
 #[macro_use]
@@ -13,6 +11,8 @@ mod trap;
 mod batch;
 mod sync;
 
+use core::arch::global_asm;
+
 global_asm!(include_str!("entry.asm"));
 global_asm!(include_str!("link_app.S"));
 

os/src/sbi.rs

@@ -10,6 +10,8 @@ const SBI_REMOTE_SFENCE_VMA: usize = 6;
 const SBI_REMOTE_SFENCE_VMA_ASID: usize = 7;
 const SBI_SHUTDOWN: usize = 8;
 
+use core::arch::asm;
+
 #[inline(always)]
 fn sbi_call(which: usize, arg0: usize, arg1: usize, arg2: usize) -> usize {
     let mut ret;

os/src/trap/mod.rs

@@ -12,6 +12,7 @@ use riscv::register::{
 };
 use crate::syscall::syscall;
 use crate::batch::run_next_app;
+use core::arch::global_asm;
 
 global_asm!(include_str!("trap.S"));
 

rust-toolchain

-nightly-2021-10-15

rust-toolchain.toml

+[toolchain]
+profile = "minimal"
+channel = "nightly-2022-07-20"
+components = ["rust-src", "llvm-tools-preview", "rustfmt", "clippy"]
\ No newline at end of file

user/src/bin/bad_address.rs

 #![no_std]
 #![no_main]
-#![feature(asm)]
 
 extern crate user_lib;
 

user/src/bin/bad_instruction.rs

 #![no_std]
 #![no_main]
-#![feature(asm)]
+
+use core::arch::asm;
 
 extern crate user_lib;
 

user/src/bin/bad_register.rs

 #![no_std]
 #![no_main]
-#![feature(asm)]
+
+use core::arch::asm;
 
 extern crate user_lib;
 

user/src/bin/hello_world.rs

 #![no_std]
 #![no_main]
-#![feature(asm)]
 
 #[macro_use]
 extern crate user_lib;

user/src/bin/test1_write0.rs

 #![no_std]
 #![no_main]
-#![feature(asm)]
+
+use core::arch::asm;
 
 #[macro_use]
 extern crate user_lib;

user/src/lib.rs

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

user/src/syscall.rs

 use super::{Stat, TimeVal};
-
+use core::arch::asm;
 pub const SYSCALL_OPENAT: usize = 56;
 pub const SYSCALL_CLOSE: usize = 57;
 pub const SYSCALL_READ: usize = 63;