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OPENSSL_cpuid_setup FreeBSD arm update.

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when possible using the getauxval equivalent which has similar ids as Linux, instead of bad instructions catch approach.

Reviewed-by: Ben Kaduk <kaduk@mit.edu>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13650)
This commit is contained in:
David Carlier 2020-12-09 20:23:32 +00:00 committed by Matt Caswell
parent b57ec7394a
commit 5eb24fbd1c
1 changed files with 17 additions and 0 deletions
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17
crypto/armcap.c
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@ -71,6 +71,23 @@ void OPENSSL_cpuid_setup(void) __attribute__ ((constructor));
# define OSSL_IMPLEMENT_GETAUXVAL
# endif
# endif
# if defined(__FreeBSD__)
# include <sys/param.h>
# if __FreeBSD_version >= 1200000
# include <sys/auxv.h>
# define OSSL_IMPLEMENT_GETAUXVAL
static unsigned long getauxval(unsigned long key)
{
unsigned long val = 0ul;
if (elf_aux_info((int)key, &val, sizeof(val)) != 0)
return 0ul;
return val;
}
# endif
# endif
/*
* ARM puts the feature bits for Crypto Extensions in AT_HWCAP2, whereas