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878ddf1f 1#------------------------------------------------------------------------------\r
2#\r
3# Copyright (c) 2006, Intel Corporation\r
4# All rights reserved. This program and the accompanying materials\r
5# are licensed and made available under the terms and conditions of the BSD License\r
6# which accompanies this distribution. The full text of the license may be found at\r
7# http://opensource.org/licenses/bsd-license.php\r
8#\r
9# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
10# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
11#\r
12# Module Name:\r
13#\r
14# CpuId.Asm\r
15#\r
16# Abstract:\r
17#\r
18# AsmCpuid function\r
19#\r
20# Notes:\r
21#\r
22#------------------------------------------------------------------------------\r
23\r
24\r
878ddf1f 25#------------------------------------------------------------------------------\r
26# VOID\r
27# EFIAPI\r
28# AsmCpuid (\r
29# IN UINT32 RegisterInEax,\r
30# OUT UINT32 *RegisterOutEax OPTIONAL,\r
31# OUT UINT32 *RegisterOutEbx OPTIONAL,\r
32# OUT UINT32 *RegisterOutEcx OPTIONAL,\r
33# OUT UINT32 *RegisterOutEdx OPTIONAL\r
34# )\r
35#------------------------------------------------------------------------------\r
1fe4ef1b 36.globl _AsmCpuid\r
878ddf1f 37_AsmCpuid:\r
1fe4ef1b 38 pushl %ebx\r
39 pushl %ebp\r
40 movl %esp, %ebp\r
41 movl 12(%ebp), %eax\r
878ddf1f 42 cpuid\r
1fe4ef1b 43 pushl %ecx\r
44 movl 16(%ebp), %ecx\r
878ddf1f 45 jecxz L1\r
1fe4ef1b 46 movl %eax, (%ecx)\r
47L1: \r
48 movl 20(%ebp), %ecx\r
878ddf1f 49 jecxz L2\r
1fe4ef1b 50 movl %ebx, (%ecx)\r
51L2: \r
52 movl 24(%ebp), %ecx\r
878ddf1f 53 jecxz L3\r
1fe4ef1b 54 popl (%ecx)\r
55L3: \r
56 movl 28(%ebp), %ecx\r
878ddf1f 57 jecxz L4\r
1fe4ef1b 58 movl %edx, (%ecx)\r
59L4: \r
60 movl 12(%ebp), %eax\r
61 leave\r
62 popl %ebx\r
878ddf1f 63 ret\r
1fe4ef1b 64\r
65\r