use llvm_asm! instead of asm! to compile on nightly

src/arch/x86_64/mod.rs

@@ -199,5 +199,5 @@ pub unsafe fn boot_kernel(
 		"Jumping to HermitCore Application Entry Point at {:#X}",
 		entry_point
 	);
-	asm!("jmp *$0" :: "r"(entry_point), "{rdi}"(&BOOT_INFO as *const _ as usize) : "memory" : "volatile");
+	llvm_asm!("jmp *$0" :: "r"(entry_point), "{rdi}"(&BOOT_INFO as *const _ as usize) : "memory" : "volatile");
 }

src/arch/x86_64/paging.rs

@@ -157,7 +157,7 @@ impl<S: PageSize> Page<S> {
 	/// Flushes this page from the TLB of this CPU.
 	fn flush_from_tlb(&self) {
 		unsafe {
-			asm!("invlpg ($0)" :: "r"(self.virtual_address) : "memory" : "volatile");
+			llvm_asm!("invlpg ($0)" :: "r"(self.virtual_address) : "memory" : "volatile");
 		}
 	}
 

src/arch/x86_64/processor.rs

@@ -8,6 +8,6 @@
 /// The halt function stops the processor until the next interrupt arrives
 pub fn halt() {
 	unsafe {
-		asm!("hlt" :::: "volatile");
+		llvm_asm!("hlt" :::: "volatile");
 	}
 }

src/lib.rs

@@ -5,9 +5,9 @@
 // http://opensource.org/licenses/MIT>, at your option. This file may not be
 // copied, modified, or distributed except according to those terms.
 
-#![feature(asm)]
 #![feature(const_fn)]
 #![feature(lang_items)]
+#![feature(llvm_asm)]
 #![feature(panic_info_message)]
 #![feature(specialization)]
 #![feature(naked_functions)]