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From: Georg-Johann Lay <gjl@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-5796] AVR: PR target/86776: Implement CVE-2017-5753. Date: Thu, 23 Nov 2023 18:04:35 +0000 (GMT) [thread overview] Message-ID: <20231123180435.4D4213858D35@sourceware.org> (raw) 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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