1;------------------------------------------------------------------------------ 2; 3; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> 4; This program and the accompanying materials 5; are licensed and made available under the terms and conditions of the BSD License 6; which accompanies this distribution. The full text of the license may be found at 7; http://opensource.org/licenses/bsd-license.php. 8; 9; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11; 12; Module Name: 13; 14; CpuIdEx.Asm 15; 16; Abstract: 17; 18; AsmCpuidEx function 19; 20; Notes: 21; 22;------------------------------------------------------------------------------ 23 24 .code 25 26;------------------------------------------------------------------------------ 27; UINT32 28; EFIAPI 29; AsmCpuidEx ( 30; IN UINT32 RegisterInEax, 31; IN UINT32 RegisterInEcx, 32; OUT UINT32 *RegisterOutEax OPTIONAL, 33; OUT UINT32 *RegisterOutEbx OPTIONAL, 34; OUT UINT32 *RegisterOutEcx OPTIONAL, 35; OUT UINT32 *RegisterOutEdx OPTIONAL 36; ) 37;------------------------------------------------------------------------------ 38AsmCpuidEx PROC USES rbx 39 mov eax, ecx 40 mov ecx, edx 41 push rax ; save Index on stack 42 cpuid 43 mov r10, [rsp + 38h] 44 test r10, r10 45 jz @F 46 mov [r10], ecx 47@@: 48 mov rcx, r8 49 jrcxz @F 50 mov [rcx], eax 51@@: 52 mov rcx, r9 53 jrcxz @F 54 mov [rcx], ebx 55@@: 56 mov rcx, [rsp + 40h] 57 jrcxz @F 58 mov [rcx], edx 59@@: 60 pop rax ; restore Index to rax as return value 61 ret 62AsmCpuidEx ENDP 63 64 END 65