1. Updated function headers in all assembly files.

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / CpuId.S

#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2006, Intel Corporation\r
# All rights reserved. This program and the accompanying materials\r
# are licensed and made available under the terms and conditions of the BSD License\r
# which accompanies this distribution.  The full text of the license may be found at\r
# http://opensource.org/licenses/bsd-license.php\r
#\r
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
#\r
# Module Name:\r
#\r
#   CpuId.Asm\r
#\r
# Abstract:\r
#\r
#   AsmCpuid function\r
#\r
# Notes:\r
#\r
#------------------------------------------------------------------------------\r
\r
.globl  _AsmCpuid\r
\r
#------------------------------------------------------------------------------\r
#  VOID\r
#  EFIAPI\r
#  AsmCpuid (\r
#    IN   UINT32  RegisterInEax,\r
#    OUT  UINT32  *RegisterOutEax  OPTIONAL,\r
#    OUT  UINT32  *RegisterOutEbx  OPTIONAL,\r
#    OUT  UINT32  *RegisterOutEcx  OPTIONAL,\r
#    OUT  UINT32  *RegisterOutEdx  OPTIONAL\r
#    )\r
#------------------------------------------------------------------------------\r
_AsmCpuid:\r
    push    %ebx\r
    push    %ebp\r
    movl    %esp, %ebp\r
    movl    12(%ebp), %eax\r
    cpuid\r
    push    %ecx\r
    movl    16(%ebp), %ecx\r
    jecxz   L1\r
    movl    %eax, (%ecx)\r
L1:\r
    movl    20(%ebp), %ecx\r
    jecxz   L2\r
    movl    %ebx, (%ecx)\r
L2:\r
    movl    24(%ebp), %ecx\r
    jecxz   L3\r
    popl    (%ecx)\r
L3:\r
    movl    28(%ebp), %ecx\r
    jecxz   L4\r
    movl    %edx, (%ecx)\r
L4:\r
    movl    12(%ebp), %eax\r
    leave\r
    pop     %ebx\r
    ret\r