x86[_64]cpuid.pl: add function accessing rdrand instruction.

This commit is contained in:
Andy Polyakov
2011-06-04 12:20:45 +00:00
parent 8d515259e2
commit 301799b803
5 changed files with 58 additions and 2 deletions

View File

@@ -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