diff options
Diffstat (limited to 'src/include/openssl/cpu.h')
| -rw-r--r-- | src/include/openssl/cpu.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/include/openssl/cpu.h b/src/include/openssl/cpu.h index 83ec473..981d246 100644 --- a/src/include/openssl/cpu.h +++ b/src/include/openssl/cpu.h @@ -77,11 +77,16 @@ extern "C" { * * Index 0: * EDX for CPUID where EAX = 1 + * Bit 20 is always zero + * Bit 28 is adjusted to reflect whether the data cache is shared between + * multiple logical cores * Bit 30 is used to indicate an Intel CPU * Index 1: * ECX for CPUID where EAX = 1 + * Bit 11 is used to indicate AMD XOP support, not SDBG * Index 2: * EBX for CPUID where EAX = 7 + * Index 3 is set to zero. * * Note: the CPUID bits are pre-adjusted for the OSXSAVE bit and the YMM and XMM * bits in XCR0, so it is not necessary to check those. */ |