From 2159f024f63c12fd356748ae8fc106bb9b355688 Mon Sep 17 00:00:00 2001
From: "Michael J. Eager" <eager@eagercon.com>
Date: Sun, 25 May 2025 07:12:14 -0700
Subject: [PATCH] MicroBlaze does not support speculative execution
 (CVE-2017-5753)

gcc/
	PR target/86772
	Tracking CVE-2017-5753
	* config/microblaze/microblaze.cc (TARGET_HAVE_SPECULATION_SAFE_VALUE):
	Define to speculation_save_value_not_needed
---
 gcc/config/microblaze/microblaze.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/config/microblaze/microblaze.cc b/gcc/config/microblaze/microblaze.cc
index db8e33465a8..2ab5ada4ec9 100644
--- a/gcc/config/microblaze/microblaze.cc
+++ b/gcc/config/microblaze/microblaze.cc
@@ -239,6 +239,10 @@ section *sdata2_section;
 #define TARGET_HAVE_TLS true
 #endif
 
+/* MicroBlaze does not do speculative execution.  */
+#undef  TARGET_HAVE_SPECULATION_SAFE_VALUE
+#define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed
+
 /* Return truth value if a CONST_DOUBLE is ok to be a legitimate constant.  */
 static bool
 microblaze_const_double_ok (rtx op, machine_mode mode)
-- 
2.47.2