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crypto/ppccap.c: SIGILL-free processor capabilities detection on MacOS X #3108

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crypto/ppccap.c: SIGILL-free processor capabilities detection on MacOS X #3108

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crypto/ppccap.c: SIGILL-free processor capabilities detection on MacO…
Apr 2, 2017
282fd5f
crypto/ppccap.c: remove backporting artefact [to be squashed] [skip ci]
Apr 2, 2017
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24 changes: 24 additions & 0 deletions crypto/ppccap.c
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Expand Up @@ -7,6 +7,10 @@
#if defined(__linux) || defined(_AIX)
# include <sys/utsname.h>
#endif
#if defined(__APPLE__) && defined(__MACH__)
# include <sys/types.h>
# include <sys/sysctl.h>
#endif
#include <openssl/crypto.h>
#include <openssl/bn.h>

Expand Down Expand Up @@ -123,6 +127,26 @@ void OPENSSL_cpuid_setup(void)
}
#endif

#if defined(__APPLE__) && defined(__MACH__)
{
int val;
size_t len = sizeof(val);

if (sysctlbyname("hw.optional.64bitops", &val, &len, NULL, 0) == 0) {
if (val)
OPENSSL_ppccap_P |= PPC_FPU64;
}

len = sizeof(val);
if (sysctlbyname("hw.optional.altivec", &val, &len, NULL, 0) == 0) {
if (val)
OPENSSL_ppccap_P |= PPC_ALTIVEC;
}

return;
}
#endif

memset(&ill_act, 0, sizeof(ill_act));
ill_act.sa_handler = ill_handler;
ill_act.sa_mask = all_masked;
Expand Down