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;*************************************************************************
;*************************************************************************
;** **
;** (C)Copyright 1985-2009, American Megatrends, Inc. **
;** **
;** All Rights Reserved. **
;** **
;** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
;** **
;** Phone: (770)-246-8600 **
;** **
;*************************************************************************
;*************************************************************************
;*************************************************************************
; $Header: /Alaska/SOURCE/Core/Modules/x64Core/x64AsmLib/CPULib_CpuID.asm 2 11/11/11 3:40p Artems $
;
; $Revision: 2 $
;
; $Date: 11/11/11 3:40p $
;*************************************************************************
; Revision History
; ----------------
; $Log: /Alaska/SOURCE/Core/Modules/x64Core/x64AsmLib/CPULib_CpuID.asm $
;
; 2 11/11/11 3:40p Artems
; Bug fix: Verify pointer is not NULL, when return value
;
; 1 10/01/10 5:07p Felixp
;
; 1 8/24/06 12:57p Felixp
;
;*************************************************************************
;<AMI_FHDR_START>
;
; Name:
;
; Description:
;
;<AMI_FHDR_END>
;*************************************************************************
.code
;*************************************************************************
;<AMI_PHDR_START>
;
; Name: CPULib_CpuID
;
; Description:
; VOID CPULib_CpuID(IN UINT32 CpuIDIndex, IN UINT32 *pRegEAX,
; IN UINT32 *pRegEBX, IN UINT32 *pRegECX, IN UINT32 *pRegEDX) issues the
; CPUID instruction with the index provided and returns the register values.
;
; Input:
; IN UINT32 CpuIDIndex
; 32-bit CPUID index.
;
; IN UINT32 *pRegEAX
; Value of EAX after CPUID instruction.
;
; IN UINT32 *pRegEBX
; Value of EBX after CPUID instruction.
;
; IN UINT32 *pRegECX
; Value of ECX after CPUID instruction.
;
; IN UINT32 *pRegEDX
; Value of EDX after CPUID instruction.
;
; Output:
; VOID.
;
; Modified:
;
; Referrals:
;
; Notes:
;
;<AMI_PHDR_END>
;*************************************************************************
CPULib_CpuID proc
;rcx = CpuIDIndex
;rdx = pRegEax
;r8 = pRegEBX
;r9 = pRegECX
;[rsp + 8] = pRegEDX:DWORD
push rbx
mov r11, [rsp + 30h] ;pRegEDX
mov r10, r9 ;pRegECX
mov r9, r8 ;pRegEBX
mov r8, rdx ;pRegEAX
mov eax, ecx
mov ecx, [r10]
cpuid
or r8, r8
jz skip1
mov [r8], eax
skip1:
or r9, r9
jz skip2
mov [r9], ebx
skip2:
or r10, r10
jz skip3
mov [r10], ecx
skip3:
or r11, r11
jz skip4
mov [r11], edx
skip4:
pop rbx
ret
CPULib_CpuID endp
END
;*************************************************************************
;*************************************************************************
;** **
;** (C)Copyright 1985-2009, American Megatrends, Inc. **
;** **
;** All Rights Reserved. **
;** **
;** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
;** **
;** Phone: (770)-246-8600 **
;** **
;*************************************************************************
|
