+++ /dev/null
-;------------------------------------------------------------------------------\r
-;\r
-; Copyright (c) 2006, Intel Corporation\r
-; All rights reserved. This program and the accompanying materials\r
-; are licensed and made available under the terms and conditions of the BSD License\r
-; which accompanies this distribution. The full text of the license may be found at\r
-; http://opensource.org/licenses/bsd-license.php\r
-;\r
-; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-;\r
-; Module Name:\r
-;\r
-; EnablePaging64.Asm\r
-;\r
-; Abstract:\r
-;\r
-; AsmEnablePaging64 function\r
-;\r
-; Notes:\r
-;\r
-;------------------------------------------------------------------------------\r
-\r
- .686p\r
- .model flat,C\r
- .code\r
-\r
-;------------------------------------------------------------------------------\r
-; VOID\r
-; EFIAPI\r
-; InternalX86EnablePaging64 (\r
-; IN UINT16 Cs,\r
-; IN UINT64 EntryPoint,\r
-; IN UINT64 Context1, OPTIONAL\r
-; IN UINT64 Context2, OPTIONAL\r
-; IN UINT64 NewStack\r
-; );\r
-;------------------------------------------------------------------------------\r
-InternalX86EnablePaging64 PROC\r
- cli\r
- mov [esp], @F ; offset for far retf, seg is the 1st arg\r
- mov eax, cr4\r
- or al, (1 SHL 5)\r
- mov cr4, eax ; enable PAE\r
- mov ecx, 0c0000080h\r
- rdmsr\r
- or ah, 1 ; set LME\r
- wrmsr\r
- mov eax, cr0\r
- bts eax, 31 ; set PG\r
- mov cr0, eax ; enable paging\r
- retf ; topmost 2 dwords hold the address\r
-@@: ; long mode starts here\r
- DB 67h, 48h ; 32-bit address size, 64-bit operand size\r
- mov ebx, [esp] ; mov rbx, [esp]\r
- DB 67h, 48h\r
- mov ecx, [esp + 8] ; mov rcx, [esp + 8]\r
- DB 67h, 48h\r
- mov edx, [esp + 10h] ; mov rdx, [esp + 10h]\r
- DB 67h, 48h\r
- mov esp, [esp + 18h] ; mov rsp, [esp + 18h]\r
- DB 48h\r
- add esp, -20h ; add rsp, -20h\r
- call ebx ; call rbx\r
- hlt ; no one should get here\r
-InternalX86EnablePaging64 ENDP\r
-\r
- END\r