1 files changed, 66 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/ia32/CpuId.asm b/MdePkg/Library/BaseLib/ia32/CpuId.asm
new file mode 100644
index 0000000000..2c94e3a1ae
--- /dev/null
+++ b/MdePkg/Library/BaseLib/ia32/CpuId.asm
@@ -0,0 +1,66 @@
+;------------------------------------------------------------------------------
+;
+; 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:
+;
+;   CpuId.Asm
+;
+; Abstract:
+;
+;   AsmCpuid function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    .586P
+    .model  flat,C
+    .code
+
+;------------------------------------------------------------------------------
+;  VOID
+;  EFIAPI
+;  AsmCpuid (
+;    IN   UINT32  RegisterInEax,
+;    OUT  UINT32  *RegisterOutEax  OPTIONAL,
+;    OUT  UINT32  *RegisterOutEbx  OPTIONAL,
+;    OUT  UINT32  *RegisterOutEcx  OPTIONAL,
+;    OUT  UINT32  *RegisterOutEdx  OPTIONAL
+;    )
+;------------------------------------------------------------------------------
+AsmCpuid    PROC    USES    ebx
+    push    ebp
+    mov     ebp, esp
+    mov     eax, [ebp + 12]
+    cpuid
+    push    ecx
+    mov     ecx, [ebp + 16]
+    jecxz   @F
+    mov     [ecx], eax
+@@:
+    mov     ecx, [ebp + 20]
+    jecxz   @F
+    mov     [ecx], ebx
+@@:
+    mov     ecx, [ebp + 24]
+    jecxz   @F
+    pop     [ecx]
+@@:
+    mov     ecx, [ebp + 28]
+    jecxz   @F
+    mov     [ecx], edx
+@@:
+    mov     eax, [ebp + 12]
+    leave
+    ret
+AsmCpuid    ENDP
+
+    END