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Check for ARM Cryptography Extension support

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ARM Cryptography Extension is optional and not all ARM CPUs support it.
For example, the CPU in Raspberry Pi 4 does not support it.

Check for `__ARM_FEATURE_CRYPTO` before attempting to use the optional
extension.

`__ARM_FEATURE_CRYPTO` is defined by both clang and gcc when the target
has the cryptography extension.

Fixes #1854.
This commit is contained in:
Gleb Mazovetskiy 2023-01-20 08:15:42 +00:00 • committed by Sean OMeara
parent 0ae09577f6
commit 9c9d1650d1
2 changed files with 8 additions and 1 deletions
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7
node/Constants.hpp
View file

@ -137,6 +137,13 @@
#endif
#endif
#ifndef ZT_ARCH_ARM_HAS_CRYPTO
#if defined(__ARM_FEATURE_CRYPTO)
// ARM Cryptography Extension
#define ZT_ARCH_ARM_HAS_CRYPTO
#endif
#endif
// Define ZT_NO_TYPE_PUNNING to disable reckless casts on anything other than x86/x64.
#if (!(defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64) || defined(_M_AMD64) || defined(_M_X64) || defined(i386) || defined(__i386) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || defined(_M_IX86) || defined(__X86__) || defined(_X86_) || defined(__I86__) || defined(__INTEL__) || defined(__386)))
#ifndef ZT_NO_TYPE_PUNNING