diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/Ia32/CpuIdEx.S')
| -rw-r--r-- | MdePkg/Library/BaseLib/Ia32/CpuIdEx.S | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/Ia32/CpuIdEx.S b/MdePkg/Library/BaseLib/Ia32/CpuIdEx.S new file mode 100644 index 0000000000..43c23b6415 --- /dev/null +++ b/MdePkg/Library/BaseLib/Ia32/CpuIdEx.S @@ -0,0 +1,67 @@ +#------------------------------------------------------------------------------ +# +# Copyright (c) 2006, 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: +# +# CpuIdEx.Asm +# +# Abstract: +# +# AsmCpuidEx function +# +# Notes: +# +#------------------------------------------------------------------------------ + + .686: + .code: + +#------------------------------------------------------------------------------ +# 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 +# ) +#------------------------------------------------------------------------------ +.globl _AsmCpuidEx +_AsmCpuidEx: + push %ebx + pushl %ebp + movl %esp, %ebp + movl 12(%ebp), %eax + movl 16(%ebp), %ecx + cpuid + pushl %ecx + movl 20(%ebp), %ecx + jecxz L1 + movl %eax, (%ecx) +L1: + movl 24(%ebp), %ecx + jecxz L2 + movl %ebx, (%ecx) +L2: + movl 28(%ebp), %ecx + jecxz L3 + popl %ecx +L3: + movl 32(%ebp), %edx + jecxz L4 + movl %edx, (%ecx) +L4: + movl 12(%ebp), %eax + pop %ebx + leave + ret |