1 files changed, 59 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/Ia32/CpuId.nasm b/roms/edk2/MdePkg/Library/BaseLib/Ia32/CpuId.nasm
new file mode 100644
index 000000000..d38135fcd
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/Ia32/CpuId.nasm
@@ -0,0 +1,59 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+; Module Name:
+;
+;   CpuId.Asm
+;
+; Abstract:
+;
+;   AsmCpuid function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    SECTION .text
+
+;------------------------------------------------------------------------------
+;  VOID
+;  EFIAPI
+;  AsmCpuid (
+;    IN   UINT32  RegisterInEax,
+;    OUT  UINT32  *RegisterOutEax  OPTIONAL,
+;    OUT  UINT32  *RegisterOutEbx  OPTIONAL,
+;    OUT  UINT32  *RegisterOutEcx  OPTIONAL,
+;    OUT  UINT32  *RegisterOutEdx  OPTIONAL
+;    );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmCpuid)
+ASM_PFX(AsmCpuid):
+    push    ebx
+    push    ebp
+    mov     ebp, esp
+    mov     eax, [ebp + 12]
+    cpuid
+    push    ecx
+    mov     ecx, [ebp + 16]
+    jecxz   .0
+    mov     [ecx], eax
+.0:
+    mov     ecx, [ebp + 20]
+    jecxz   .1
+    mov     [ecx], ebx
+.1:
+    mov     ecx, [ebp + 24]
+    jecxz   .2
+    pop     DWORD [ecx]
+.2:
+    mov     ecx, [ebp + 28]
+    jecxz   .3
+    mov     [ecx], edx
+.3:
+    mov     eax, [ebp + 12]
+    leave
+    pop     ebx
+    ret
+