From bda12fe55e667e0981bec11f019b25adbb44878e Mon Sep 17 00:00:00 2001
From: 4lDO2 <4lDO2@protonmail.com>
Date: Tue, 16 Jul 2024 13:10:52 +0200
Subject: [PATCH] Print MXCSR in the SIMD exception handler.

---
 src/arch/x86_64/interrupt/exception.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/arch/x86_64/interrupt/exception.rs b/src/arch/x86_64/interrupt/exception.rs
index dbd422bc68..e1eadb09f6 100644
--- a/src/arch/x86_64/interrupt/exception.rs
+++ b/src/arch/x86_64/interrupt/exception.rs
@@ -189,6 +189,9 @@ interrupt_stack!(machine_check, @paranoid, |stack| {
 interrupt_stack!(simd, |stack| {
     println!("SIMD floating point fault");
     stack.dump();
+    let mut mxcsr = 0_usize;
+    core::arch::asm!("stmxcsr [{}]", in(reg) core::ptr::addr_of_mut!(mxcsr));
+    println!("MXCSR {:#0x}", mxcsr);
     stack_trace();
     ksignal(SIGFPE);
 });