Replace llvm_asm! with asm

os/src/batch.rs

@@ -58,7 +58,7 @@ impl AppManager {
         }
         println!("[kernel] Loading app_{}", app_id);
         // clear icache
-        llvm_asm!("fence.i" :::: "volatile");
+        asm!("fence.i");
         // clear app area
         core::slice::from_raw_parts_mut(
             APP_BASE_ADDRESS as *mut u8,

os/src/main.rs

@@ -1,7 +1,7 @@
 #![no_std]
 #![no_main]
 #![feature(global_asm)]
-#![feature(llvm_asm)]
+#![feature(asm)]
 #![feature(panic_info_message)]
 
 #[macro_use]

os/src/sbi.rs

@@ -14,11 +14,12 @@ const SBI_SHUTDOWN: usize = 8;
 fn sbi_call(which: usize, arg0: usize, arg1: usize, arg2: usize) -> usize {
     let mut ret;
     unsafe {
-        llvm_asm!("ecall"
-            : "={x10}" (ret)
-            : "{x10}" (arg0), "{x11}" (arg1), "{x12}" (arg2), "{x17}" (which)
-            : "memory"
-            : "volatile"
+        asm!(
+            "ecall",
+            inlateout("x10") arg0 => ret,
+            in("x11") arg1,
+            in("x12") arg2,
+            in("x17") which,
         );
     }
     ret

user/src/lib.rs

@@ -1,5 +1,5 @@
 #![no_std]
-#![feature(llvm_asm)]
+#![feature(asm)]
 #![feature(linkage)]
 #![feature(panic_info_message)]
 

user/src/syscall.rs

@@ -4,11 +4,12 @@ const SYSCALL_EXIT: usize = 93;
 fn syscall(id: usize, args: [usize; 3]) -> isize {
     let mut ret: isize;
     unsafe {
-        llvm_asm!("ecall"
-            : "={x10}" (ret)
-            : "{x10}" (args[0]), "{x11}" (args[1]), "{x12}" (args[2]), "{x17}" (id)
-            : "memory"
-            : "volatile"
+        asm!(
+            "ecall",
+            inlateout("x10") args[0] => ret,
+            in("x11") args[1],
+            in("x12") args[2],
+            in("x17") id
         );
     }
     ret