From 281ba1370dbf0cab6520fcde02c53009b399be96 Mon Sep 17 00:00:00 2001
From: Simon Renblad <srenblad@m-labs.hk>
Date: Mon, 6 Jan 2025 14:21:59 +0800
Subject: [PATCH] add isb after cpacr update

---
 libcortex_a9/src/fpu.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libcortex_a9/src/fpu.rs b/libcortex_a9/src/fpu.rs
index c4dd568..4424330 100644
--- a/libcortex_a9/src/fpu.rs
+++ b/libcortex_a9/src/fpu.rs
@@ -6,6 +6,7 @@ pub fn enable_fpu() {
             mrc p15, 0, r1, c1, c0, 2
             orr r1, r1, (0b1111<<20)
             mcr p15, 0, r1, c1, c0, 2
+            isb
 
             vmrs r1, fpexc
             orr r1, r1, (1<<30)