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| ;------------------------------------------------------------------------------
| ;
| ; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
| ; SPDX-License-Identifier: BSD-2-Clause-Patent
| ;
| ; Module Name:
| ;
| ; CpuIdEx.Asm
| ;
| ; Abstract:
| ;
| ; AsmCpuidEx function
| ;
| ; Notes:
| ;
| ;------------------------------------------------------------------------------
|
| DEFAULT REL
| SECTION .text
|
| ;------------------------------------------------------------------------------
| ; UINT32
| ; EFIAPI
| ; AsmCpuidEx (
| ; IN UINT32 RegisterInEax,
| ; IN UINT32 RegisterInEcx,
| ; OUT UINT32 *RegisterOutEax OPTIONAL,
| ; OUT UINT32 *RegisterOutEbx OPTIONAL,
| ; OUT UINT32 *RegisterOutEcx OPTIONAL,
| ; OUT UINT32 *RegisterOutEdx OPTIONAL
| ; )
| ;------------------------------------------------------------------------------
| global ASM_PFX(AsmCpuidEx)
| ASM_PFX(AsmCpuidEx):
| push rbx
| mov eax, ecx
| mov ecx, edx
| push rax ; save Index on stack
| cpuid
| mov r10, [rsp + 0x38]
| test r10, r10
| jz .0
| mov [r10], ecx
| .0:
| mov rcx, r8
| jrcxz .1
| mov [rcx], eax
| .1:
| mov rcx, r9
| jrcxz .2
| mov [rcx], ebx
| .2:
| mov rcx, [rsp + 0x40]
| jrcxz .3
| mov [rcx], edx
| .3:
| pop rax ; restore Index to rax as return value
| pop rbx
| ret
|
|
|
