From a10926df76c7ea7949a3bd798215fc4b93ef120d Mon Sep 17 00:00:00 2001
From: Stephen Marz <stephen.marz@utk.edu>
Date: Sat, 12 Oct 2019 21:33:27 -0400
Subject: [PATCH] Change C++ to Rust

---
 risc_v/ch4/src/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/risc_v/ch4/src/lib.rs b/risc_v/ch4/src/lib.rs
index fc329cb..8a12f1d 100755
--- a/risc_v/ch4/src/lib.rs
+++ b/risc_v/ch4/src/lib.rs
@@ -301,6 +301,7 @@ extern "C" fn kmain() {
 	unsafe {
 		let val = 0x0200_0000 as *mut u32;
 		val.write_volatile(1);
+		asm!("ecall");
 	}
 	// If we get here, the Box, vec, and String should all be freed since
 	// they go out of scope. This calls their "Drop" trait.