CpuIdEx.c revision 4fd606d1f5abe38e1f42c38de1d2e895166bd0f4
/** @file
AsmCpuidEx function.
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
/**
Retrieves CPUID information using an extended leaf identifier.
Executes the CPUID instruction with EAX set to the value specified by Index
and ECX set to the value specified by SubIndex. This function always returns
Index. This function is only available on IA-32 and x64.
If Eax is not NULL, then the value of EAX after CPUID is returned in Eax.
If Ebx is not NULL, then the value of EBX after CPUID is returned in Ebx.
If Ecx is not NULL, then the value of ECX after CPUID is returned in Ecx.
If Edx is not NULL, then the value of EDX after CPUID is returned in Edx.
@param Index The 32-bit value to load into EAX prior to invoking the
CPUID instruction.
@param SubIndex The 32-bit value to load into ECX prior to invoking the
CPUID instruction.
@param RegisterEax A pointer to the 32-bit EAX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
@param RegisterEbx A pointer to the 32-bit EBX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
@param RegisterEcx A pointer to the 32-bit ECX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
@param RegisterEdx A pointer to the 32-bit EDX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
@return Index.
**/
)
{
_asm {
}
}