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* [gcc r14-5796] AVR: PR target/86776: Implement CVE-2017-5753.
@ 2023-11-23 18:04 Georg-Johann Lay
  0 siblings, 0 replies; only message in thread
From: Georg-Johann Lay @ 2023-11-23 18:04 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:9a3c40af7f7dd218cc2ebaa3a70f3317f7316ceb

commit r14-5796-g9a3c40af7f7dd218cc2ebaa3a70f3317f7316ceb
Author: Georg-Johann Lay <avr@gjlay.de>
Date:   Thu Nov 23 19:02:47 2023 +0100

    AVR: PR target/86776: Implement CVE-2017-5753.
    
    gcc/
            PR target/86776
            * config/avr/avr.cc (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define
            to speculation_safe_value_not_needed.

Diff:
---
 gcc/config/avr/avr.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gcc/config/avr/avr.cc b/gcc/config/avr/avr.cc
index c3e0995dfc3..a297f4e092a 100644
--- a/gcc/config/avr/avr.cc
+++ b/gcc/config/avr/avr.cc
@@ -15309,6 +15309,12 @@ avr_float_lib_compare_returns_bool (machine_mode mode, enum rtx_code)
 #undef  TARGET_CANONICALIZE_COMPARISON
 #define TARGET_CANONICALIZE_COMPARISON avr_canonicalize_comparison
 
+/* According to the opening comment in PR86772, the following applies:
+  "If the port does not (and never will in the future) need to mitigate
+   against unsafe speculation."  */
+#undef  TARGET_HAVE_SPECULATION_SAFE_VALUE
+#define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed
+
 struct gcc_target targetm = TARGET_INITIALIZER;

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