diff options
Diffstat (limited to 'Core/UefiCpuPkg/CpuDxe/X64/CpuAsm.asm')
| -rw-r--r-- | Core/UefiCpuPkg/CpuDxe/X64/CpuAsm.asm | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/Core/UefiCpuPkg/CpuDxe/X64/CpuAsm.asm b/Core/UefiCpuPkg/CpuDxe/X64/CpuAsm.asm new file mode 100644 index 0000000000..c71b06a81e --- /dev/null +++ b/Core/UefiCpuPkg/CpuDxe/X64/CpuAsm.asm @@ -0,0 +1,54 @@ + TITLE CpuAsm.asm:
+;------------------------------------------------------------------------------
+;*
+;* Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
+;* 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.
+;*
+;* CpuAsm.asm
+;*
+;* Abstract:
+;*
+;------------------------------------------------------------------------------
+
+ .code
+
+;------------------------------------------------------------------------------
+; VOID
+; SetCodeSelector (
+; UINT16 Selector
+; );
+;------------------------------------------------------------------------------
+SetCodeSelector PROC PUBLIC
+ sub rsp, 0x10
+ lea rax, setCodeSelectorLongJump
+ mov [rsp], rax
+ mov [rsp+4], cx
+ jmp fword ptr [rsp]
+setCodeSelectorLongJump:
+ add rsp, 0x10
+ ret
+SetCodeSelector ENDP
+
+;------------------------------------------------------------------------------
+; VOID
+; SetDataSelectors (
+; UINT16 Selector
+; );
+;------------------------------------------------------------------------------
+SetDataSelectors PROC PUBLIC
+ mov ss, cx
+ mov ds, cx
+ mov es, cx
+ mov fs, cx
+ mov gs, cx
+ ret
+SetDataSelectors ENDP
+
+END
+
|