mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-29 12:35:53 +01:00
59 lines
1.4 KiB
NASM
59 lines
1.4 KiB
NASM
|
;------------------------------------------------------------------------------
|
||
|
|
;
|
||
|
|
; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
|
||
|
|
; SPDX-License-Identifier: BSD-2-Clause-Patent
|
||
|
|
;
|
||
|
|
; Module Name:
|
||
|
|
;
|
||
|
|
; CpuId.Asm
|
||
|
|
;
|
||
|
|
; Abstract:
|
||
|
|
;
|
||
|
|
; AsmCpuid function
|
||
|
|
;
|
||
|
|
; Notes:
|
||
|
|
;
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
DEFAULT REL
|
||
|
|
SECTION .text
|
||
|
|
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; VOID
|
||
|
|
; EFIAPI
|
||
|
|
; AsmCpuid (
|
||
|
|
; IN UINT32 RegisterInEax,
|
||
|
|
; OUT UINT32 *RegisterOutEax OPTIONAL,
|
||
|
|
; OUT UINT32 *RegisterOutEbx OPTIONAL,
|
||
|
|
; OUT UINT32 *RegisterOutEcx OPTIONAL,
|
||
|
|
; OUT UINT32 *RegisterOutEdx OPTIONAL
|
||
|
|
; )
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
global ASM_PFX(AsmCpuid)
|
||
|
|
ASM_PFX(AsmCpuid):
|
||
|
|
push rbx
|
||
|
|
mov eax, ecx
|
||
|
|
push rax ; save Index on stack
|
||
|
|
push rdx
|
||
|
|
cpuid
|
||
|
|
test r9, r9
|
||
|
|
jz .0
|
||
|
|
mov [r9], ecx
|
||
|
|
.0:
|
||
|
|
pop rcx
|
||
|
|
jrcxz .1
|
||
|
|
mov [rcx], eax
|
||
|
|
.1:
|
||
|
|
mov rcx, r8
|
||
|
|
jrcxz .2
|
||
|
|
mov [rcx], ebx
|
||
|
|
.2:
|
||
|
|
mov rcx, [rsp + 0x38]
|
||
|
|
jrcxz .3
|
||
|
|
mov [rcx], edx
|
||
|
|
.3:
|
||
|
|
pop rax ; restore Index to rax as return value
|
||
|
|
pop rbx
|
||
|
|
ret
|
||
|
|
|