X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=OldMdePkg%2FLibrary%2FBaseLib%2FIa32%2FCpuId.c;fp=OldMdePkg%2FLibrary%2FBaseLib%2FIa32%2FCpuId.c;h=64b215a462c61e8b223911effc5e1640e0ddaae8;hp=0000000000000000000000000000000000000000;hb=586cd1f1f4129ab7ec24543d4968801e17cc870b;hpb=144d783d40c8a02113350feabd1b9a55b692313f

diff --git a/OldMdePkg/Library/BaseLib/Ia32/CpuId.c b/OldMdePkg/Library/BaseLib/Ia32/CpuId.c
new file mode 100644
index 0000000000..64b215a462
--- /dev/null
+++ b/OldMdePkg/Library/BaseLib/Ia32/CpuId.c
@@ -0,0 +1,49 @@
+/** @file
+  AsmCpuid function.
+
+  Copyright (c) 2006 - 2007, Intel Corporation<BR>
+  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.
+
+**/
+
+UINT32
+EFIAPI
+AsmCpuid (
+  IN      UINT32                    Index,
+  OUT     UINT32                    *RegisterEax,  OPTIONAL
+  OUT     UINT32                    *RegisterEbx,  OPTIONAL
+  OUT     UINT32                    *RegisterEcx,  OPTIONAL
+  OUT     UINT32                    *RegisterEdx   OPTIONAL
+  )
+{
+  _asm {
+    mov     eax, Index
+    cpuid
+    push    ecx
+    mov     ecx, RegisterEax
+    jecxz   SkipEax
+    mov     [ecx], eax
+SkipEax:
+    mov     ecx, RegisterEbx
+    jecxz   SkipEbx
+    mov     [ecx], ebx
+SkipEbx:
+    pop     eax
+    mov     ecx, RegisterEcx
+    jecxz   SkipEcx
+    mov     [ecx], eax
+SkipEcx:
+    mov     ecx, RegisterEdx
+    jecxz   SkipEdx
+    mov     [ecx], edx
+SkipEdx:
+    mov     eax, Index
+  }
+}
+