diff options
| author | bbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-04-24 22:17:39 +0000 |
|---|---|---|
| committer | bbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-04-24 22:17:39 +0000 |
| commit | 185d764218d07c06838d4758125a5ca66178e7c9 (patch) | |
| tree | 6e628a1b60b10166b39d40bb7547c90cc1c32128 /MdePkg/Library/BaseLib/X64/CpuId.asm | |
| parent | dd9f96de98c61f89d865600ce99cfd026711b02c (diff) | |
| download | edk2-platforms-185d764218d07c06838d4758125a5ca66178e7c9.tar.xz | |
Rename dirs
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@16 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseLib/X64/CpuId.asm')
| -rw-r--r-- | MdePkg/Library/BaseLib/X64/CpuId.asm | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/X64/CpuId.asm b/MdePkg/Library/BaseLib/X64/CpuId.asm new file mode 100644 index 0000000000..867e92a677 --- /dev/null +++ b/MdePkg/Library/BaseLib/X64/CpuId.asm @@ -0,0 +1,62 @@ +;------------------------------------------------------------------------------
+;
+; 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:
+;
+;------------------------------------------------------------------------------
+
+ .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 rbx
+ mov eax, ecx
+ push rdx
+ push rax ; save Index on stack
+ cpuid
+ test r9, r9
+ jz @F
+ mov [r9], ecx
+@@:
+ pop rcx
+ jrcxz @F
+ mov [rcx], eax
+@@:
+ mov rcx, r8
+ jrcxz @F
+ mov [rcx], ebx
+@@:
+ mov rcx, [rsp + 30h]
+ jrcxz @F
+ mov [rcx], edx
+@@:
+ pop rax ; restore Index to rax as return value
+ ret
+AsmCpuid ENDP
+
+ END
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