From 64142c4cb865e8cd7f34e3b1c6702722d022f808 Mon Sep 17 00:00:00 2001
From: losfair <zhy20000919@hotmail.com>
Date: Thu, 28 Feb 2019 23:22:21 +0800
Subject: [PATCH] Reserve R15.

---
 lib/dynasm-backend/src/codegen_x64.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/dynasm-backend/src/codegen_x64.rs b/lib/dynasm-backend/src/codegen_x64.rs
index 6742b64f0..5a1f122e5 100644
--- a/lib/dynasm-backend/src/codegen_x64.rs
+++ b/lib/dynasm-backend/src/codegen_x64.rs
@@ -99,7 +99,7 @@ impl Register {
             9 => R12,
             10 => R13,
             11 => R14,
-            12 => R15,
+            // 12 => R15, // R15 is reserved for memory base pointer.
             _ => unreachable!(),
         }
     }