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 DEFAULT REL 25 SECTION .text 26 27;------------------------------------------------------------------------------ 28; UINT32 29; EFIAPI 30; AsmCpuidEx ( 31; IN UINT32 RegisterInEax, 32; IN UINT32 RegisterInEcx, 33; OUT UINT32 *RegisterOutEax OPTIONAL, 34; OUT UINT32 *RegisterOutEbx OPTIONAL, 35; OUT UINT32 *RegisterOutEcx OPTIONAL, 36; OUT UINT32 *RegisterOutEdx OPTIONAL 37; ) 38;------------------------------------------------------------------------------ 39global ASM_PFX(AsmCpuidEx) 40ASM_PFX(AsmCpuidEx): 41 push rbx 42 mov eax, ecx 43 mov ecx, edx 44 push rax ; save Index on stack 45 cpuid 46 mov r10, [rsp + 0x38] 47 test r10, r10 48 jz .0 49 mov [r10], ecx 50.0: 51 mov rcx, r8 52 jrcxz .1 53 mov [rcx], eax 54.1: 55 mov rcx, r9 56 jrcxz .2 57 mov [rcx], ebx 58.2: 59 mov rcx, [rsp + 0x40] 60 jrcxz .3 61 mov [rcx], edx 62.3: 63 pop rax ; restore Index to rax as return value 64 pop rbx 65 ret 66 67