1 files changed, 47 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuDxe/Ia32/CpuAsm.nasm b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuDxe/Ia32/CpuAsm.nasm
new file mode 100644
index 00000000..b9d440a7
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuDxe/Ia32/CpuAsm.nasm
@@ -0,0 +1,47 @@
+;------------------------------------------------------------------------------
+;*
+;*   Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+;*   SPDX-License-Identifier: BSD-2-Clause-Patent
+;*
+;*    CpuAsm.nasm
+;*
+;*   Abstract:
+;*
+;------------------------------------------------------------------------------
+
+    SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID
+; SetCodeSelector (
+;   UINT16 Selector
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(SetCodeSelector)
+ASM_PFX(SetCodeSelector):
+    mov     ecx, [esp+4]
+    sub     esp, 0x10
+    lea     eax, [setCodeSelectorLongJump]
+    mov     [esp], eax
+    mov     [esp+4], cx
+    jmp     dword far [esp]
+setCodeSelectorLongJump:
+    add     esp, 0x10
+    ret
+
+;------------------------------------------------------------------------------
+; VOID
+; SetDataSelectors (
+;   UINT16 Selector
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(SetDataSelectors)
+ASM_PFX(SetDataSelectors):
+    mov     ecx, [esp+4]
+o16 mov     ss, cx
+o16 mov     ds, cx
+o16 mov     es, cx
+o16 mov     fs, cx
+o16 mov     gs, cx
+    ret
+