#------------------------------------------------------------------------------ | |
# | |
# Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> | |
# 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: | |
# | |
# CpuIdEx.S | |
# | |
# Abstract: | |
# | |
# AsmCpuidEx function | |
# | |
# Notes: | |
# | |
#------------------------------------------------------------------------------ | |
#------------------------------------------------------------------------------ | |
# UINT32 | |
# EFIAPI | |
# AsmCpuidEx ( | |
# IN UINT32 RegisterInEax, | |
# IN UINT32 RegisterInEcx, | |
# OUT UINT32 *RegisterOutEax OPTIONAL, | |
# OUT UINT32 *RegisterOutEbx OPTIONAL, | |
# OUT UINT32 *RegisterOutEcx OPTIONAL, | |
# OUT UINT32 *RegisterOutEdx OPTIONAL | |
# ) | |
#------------------------------------------------------------------------------ | |
ASM_GLOBAL ASM_PFX(AsmCpuidEx) | |
ASM_PFX(AsmCpuidEx): | |
push %rbx | |
movl %ecx,%eax | |
movl %edx,%ecx | |
push %rax # save Index on stack | |
cpuid | |
mov 0x38(%rsp), %r10 | |
test %r10, %r10 | |
jz L1 | |
mov %ecx,(%r10) | |
L1: | |
mov %r8, %rcx | |
jrcxz L2 | |
movl %eax,(%rcx) | |
L2: | |
mov %r9, %rcx | |
jrcxz L3 | |
mov %ebx, (%rcx) | |
L3: | |
mov 0x40(%rsp), %rcx | |
jrcxz L4 | |
mov %edx, (%rcx) | |
L4: | |
pop %rax # restore Index to rax as return value | |
pop %rbx | |
ret |