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--- third_party/unrar/src/crc.cpp.orig 2025-02-21 07:45:09 UTC
+++ third_party/unrar/src/crc.cpp
@@ -43,12 +43,18 @@ void InitCRC32(uint *CRCTab)
}
#ifdef USE_NEON_CRC32
- #ifdef _APPLE
+ #if defined(_APPLE)
// getauxval isn't available in OS X
uint Value=0;
size_t Size=sizeof(Value);
int RetCode=sysctlbyname("hw.optional.armv8_crc32",&Value,&Size,NULL,0);
CRC_Neon=RetCode==0 && Value!=0;
+ #elif defined(__FreeBSD__)
+ // getauxval isn't available on FreeBSD
+ uint64 Reg=READ_SPECIALREG(id_aa64isar0_el1);
+ if (ID_AA64ISAR0_CRC32_VAL(Reg) == ID_AA64ISAR0_CRC32_BASE) {
+ CRC_Neon=true;
+ }
#else
CRC_Neon=(getauxval(AT_HWCAP) & HWCAP_CRC32)!=0;
#endif
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