diff options
| author | Andy Polyakov <appro@openssl.org> | 2011-06-04 12:20:45 +0000 |
|---|---|---|
| committer | Andy Polyakov <appro@openssl.org> | 2011-06-04 12:20:45 +0000 |
| commit | 301799b803fc9f3e2adaad32b1ccace736bbe7cc (patch) | |
| tree | 0edc73d8425ac47b5124104760cb0294c53b214f /doc | |
| parent | 8d515259e2a4631a5b42f1a072b0ff6f8eba189c (diff) | |
x86[_64]cpuid.pl: add function accessing rdrand instruction.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/crypto/OPENSSL_ia32cap.pod | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/doc/crypto/OPENSSL_ia32cap.pod b/doc/crypto/OPENSSL_ia32cap.pod index 3f6458c6bd..17189ed843 100644 --- a/doc/crypto/OPENSSL_ia32cap.pod +++ b/doc/crypto/OPENSSL_ia32cap.pod @@ -51,6 +51,8 @@ moment of this writing following bits are significant: =item bit #60 denoting AVX extension; +=item bit #62 denoting availability of RDRAND instruction; + For example, clearing bit #26 at run-time disables high-performance SSE2 code present in the crypto library, while clearing bit #24 disables SSE2 code operating on 128-bit XMM register bank. You might |