1;------------------------------------------------------------------------------ 2; 3; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> 4; This program and the accompanying materials 5; are licensed and made available under the terms and conditions of the BSD License 6; which accompanies this distribution. The full text of the license may be found at 7; http://opensource.org/licenses/bsd-license.php. 8; 9; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11; 12; Module Name: 13; 14; DisablePaging32.Asm 15; 16; Abstract: 17; 18; AsmDisablePaging32 function 19; 20; Notes: 21; 22;------------------------------------------------------------------------------ 23 24 SECTION .text 25 26;------------------------------------------------------------------------------ 27; VOID 28; EFIAPI 29; InternalX86DisablePaging32 ( 30; IN SWITCH_STACK_ENTRY_POINT EntryPoint, 31; IN VOID *Context1, OPTIONAL 32; IN VOID *Context2, OPTIONAL 33; IN VOID *NewStack 34; ); 35;------------------------------------------------------------------------------ 36global ASM_PFX(InternalX86DisablePaging32) 37ASM_PFX(InternalX86DisablePaging32): 38 mov ebx, [esp + 4] 39 mov ecx, [esp + 8] 40 mov edx, [esp + 12] 41 pushfd 42 pop edi ; save EFLAGS to edi 43 cli 44 mov eax, cr0 45 btr eax, 31 46 mov esp, [esp + 16] 47 mov cr0, eax 48 push edi 49 popfd ; restore EFLAGS from edi 50 push edx 51 push ecx 52 call ebx 53 jmp $ ; EntryPoint() should not return 54 55