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armcap: skip probing _armv7_tick()
Detection of this feature is unreliable so only use it if requested. Reviewed-by: Paul Dale <pauli@openssl.org> Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> Reviewed-by: Hugo Landau <hlandau@openssl.org> (Merged from https://github.com/openssl/openssl/pull/18852)
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@ -357,11 +357,11 @@ void OPENSSL_cpuid_setup(void)
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# endif
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# endif
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/* Things that getauxval didn't tell us */
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if (sigsetjmp(ill_jmp, 1) == 0) {
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_armv7_tick();
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OPENSSL_armcap_P |= ARMV7_TICK;
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}
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/*
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* Probing for ARMV7_TICK is known to produce unreliable results,
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* so we will only use the feature when the user explicitly enables
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* it with OPENSSL_armcap.
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*/
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sigaction(SIGILL, &ill_oact, NULL);
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sigprocmask(SIG_SETMASK, &oset, NULL);
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