From 26e632d174731816bf951953a0b18eafb7ce47bb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alexander=20Mei=C3=9Fner?= <AlexanderMeissner@gmx.net>
Date: Thu, 26 Sep 2024 00:47:41 +0200
Subject: [PATCH] Zero out RBP in order not to compromise the environment
 encryption.

---
 src/jit.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/jit.rs b/src/jit.rs
index c90994d06..d29644e4b 100644
--- a/src/jit.rs
+++ b/src/jit.rs
@@ -109,6 +109,8 @@ impl JitProgram {
         unsafe {
             std::arch::asm!(
                 // RBP is saved and restored automatically by the surrounding function.
+                // It is zeroed out in order not to compromise the runtime environment (RDI) encryption.
+                "xor rbp, rbp",
                 // RBX must be saved and restored manually in the current version of rustc and llvm.
                 "push rbx",
                 "mov [{host_stack_pointer}], rsp",