X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=OldMdePkg%2FLibrary%2FBaseLib%2FX64%2FCpuId.asm;fp=OldMdePkg%2FLibrary%2FBaseLib%2FX64%2FCpuId.asm;h=5e7ee19c539b4d98cef070141e538411ee9fe2e3;hp=0000000000000000000000000000000000000000;hb=586cd1f1f4129ab7ec24543d4968801e17cc870b;hpb=144d783d40c8a02113350feabd1b9a55b692313f

diff --git a/OldMdePkg/Library/BaseLib/X64/CpuId.asm b/OldMdePkg/Library/BaseLib/X64/CpuId.asm
new file mode 100644
index 0000000000..5e7ee19c53
--- /dev/null
+++ b/OldMdePkg/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    rax                         ; save Index on stack
+    push    rdx
+    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 + 38h]
+    jrcxz   @F
+    mov     [rcx], edx
+@@:
+    pop     rax                         ; restore Index to rax as return value
+    ret
+AsmCpuid    ENDP
+
+    END