1 ;------------------------------------------------------------------------------ 2 ; 3 ; Copyright (c) 2006, 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 ; CpuId.Asm 15 ; 16 ; Abstract: 17 ; 18 ; AsmCpuid function 19 ; 20 ; Notes: 21 ; 22 ;------------------------------------------------------------------------------ 23 24 .586P 25 .model flat,C 26 .code 27 28 ;------------------------------------------------------------------------------ 29 ; VOID 30 ; EFIAPI 31 ; AsmCpuid ( 32 ; IN UINT32 RegisterInEax, 33 ; OUT UINT32 *RegisterOutEax OPTIONAL, 34 ; OUT UINT32 *RegisterOutEbx OPTIONAL, 35 ; OUT UINT32 *RegisterOutEcx OPTIONAL, 36 ; OUT UINT32 *RegisterOutEdx OPTIONAL 37 ; ); 38 ;------------------------------------------------------------------------------ 39 AsmCpuid PROC USES ebx 40 push ebp 41 mov ebp, esp 42 mov eax, [ebp + 12] 43 cpuid 44 push ecx 45 mov ecx, [ebp + 16] 46 jecxz @F 47 mov [ecx], eax 48 @@: 49 mov ecx, [ebp + 20] 50 jecxz @F 51 mov [ecx], ebx 52 @@: 53 mov ecx, [ebp + 24] 54 jecxz @F 55 pop DWORD [ecx] 56 @@: 57 mov ecx, [ebp + 28] 58 jecxz @F 59 mov [ecx], edx 60 @@: 61 mov eax, [ebp + 12] 62 leave 63 ret 64 AsmCpuid ENDP 65 66 END 67
