diff options
Diffstat (limited to 'EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/CpuId.asm')
| -rw-r--r-- | EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/CpuId.asm | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/CpuId.asm b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/CpuId.asm new file mode 100644 index 0000000..9b87d60 --- /dev/null +++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/CpuId.asm @@ -0,0 +1,64 @@ +; Copyright (c) 2004, Intel Corporation +; All rights reserved. This program and the accompanying materials +; are licensed and made available under the terms and conditions of the BSD License +; which accompanies this distribution. The full text of the license may be found at +; http://opensource.org/licenses/bsd-license.php +; +; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +; +; Module Name: +; +; CpuId.Asm +; +; Abstract: +; +; AsmCpuid function +; +; Notes: +; +;------------------------------------------------------------------------------ + + .586P + .model flat,C + .code + +;------------------------------------------------------------------------------ +; VOID +; EFIAPI +; AsmCpuid ( +; IN UINT32 RegisterInEax, +; OUT UINT32 *RegisterOutEax OPTIONAL, +; OUT UINT32 *RegisterOutEbx OPTIONAL, +; OUT UINT32 *RegisterOutEcx OPTIONAL, +; OUT UINT32 *RegisterOutEdx OPTIONAL +; ); +;------------------------------------------------------------------------------ +AsmCpuid PROC USES ebx + push ebp + mov ebp, esp + mov eax, [ebp + 12] + cpuid + push ecx + mov ecx, [ebp + 16] + jecxz @F + mov [ecx], eax +@@: + mov ecx, [ebp + 20] + jecxz @F + mov [ecx], ebx +@@: + mov ecx, [ebp + 24] + jecxz @F + pop [ecx] +@@: + mov ecx, [ebp + 28] + jecxz @F + mov [ecx], edx +@@: + mov eax, [ebp + 12] + leave + ret +AsmCpuid ENDP + + END |