From: vanjeff Date: Thu, 25 Sep 2008 02:23:58 +0000 (+0000) Subject: Change name. X-Git-Tag: edk2-stable201903~20259 X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=3c6a5186ae644cb01cad0502ba49d8f630eb8fd1 Change name. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5966 6f19259b-4bc3-4df7-8a09-765794883524 --- diff --git a/MdePkg/Library/BaseLib/X86DisablePaging32.c b/MdePkg/Library/BaseLib/X86DisablePaging32.c new file mode 100644 index 0000000000..976ba8bc07 --- /dev/null +++ b/MdePkg/Library/BaseLib/X86DisablePaging32.c @@ -0,0 +1,66 @@ +/** @file + IA-32/x64 AsmDisablePaging32() + + Copyright (c) 2006, Intel Corporation
+ All rights reserved. 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. + +**/ + + + + +#include "BaseLibInternals.h" + +/** + Disables the 32-bit paging mode on the CPU. + + Disables the 32-bit paging mode on the CPU and returns to 32-bit protected + mode. This function assumes the current execution mode is 32-paged protected + mode. This function is only available on IA-32. After the 32-bit paging mode + is disabled, control is transferred to the function specified by EntryPoint + using the new stack specified by NewStack and passing in the parameters + specified by Context1 and Context2. Context1 and Context2 are optional and + may be NULL. The function EntryPoint must never return. + + If the current execution mode is not 32-bit paged mode, then ASSERT(). + If EntryPoint is NULL, then ASSERT(). + If NewStack is NULL, then ASSERT(). + + There are a number of constraints that must be followed before calling this + function: + 1) Interrupts must be disabled. + 2) The caller must be in 32-bit paged mode. + 3) CR0, CR3, and CR4 must be compatible with 32-bit paged mode. + 4) CR3 must point to valid page tables that guarantee that the pages for + this function and the stack are identity mapped. + + @param EntryPoint A pointer to function to call with the new stack after + paging is disabled. + @param Context1 A pointer to the context to pass into the EntryPoint + function as the first parameter after paging is disabled. + @param Context2 A pointer to the context to pass into the EntryPoint + function as the second parameter after paging is + disabled. + @param NewStack A pointer to the new stack to use for the EntryPoint + function after paging is disabled. + +**/ +VOID +EFIAPI +AsmDisablePaging32 ( + IN SWITCH_STACK_ENTRY_POINT EntryPoint, + IN VOID *Context1, OPTIONAL + IN VOID *Context2, OPTIONAL + IN VOID *NewStack + ) +{ + ASSERT (EntryPoint != NULL); + ASSERT (NewStack != NULL); + InternalX86DisablePaging32 (EntryPoint, Context1, Context2, NewStack); +} diff --git a/MdePkg/Library/BaseLib/x86DisablePaging32.c b/MdePkg/Library/BaseLib/x86DisablePaging32.c deleted file mode 100644 index 976ba8bc07..0000000000 --- a/MdePkg/Library/BaseLib/x86DisablePaging32.c +++ /dev/null @@ -1,66 +0,0 @@ -/** @file - IA-32/x64 AsmDisablePaging32() - - Copyright (c) 2006, Intel Corporation
- All rights reserved. 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. - -**/ - - - - -#include "BaseLibInternals.h" - -/** - Disables the 32-bit paging mode on the CPU. - - Disables the 32-bit paging mode on the CPU and returns to 32-bit protected - mode. This function assumes the current execution mode is 32-paged protected - mode. This function is only available on IA-32. After the 32-bit paging mode - is disabled, control is transferred to the function specified by EntryPoint - using the new stack specified by NewStack and passing in the parameters - specified by Context1 and Context2. Context1 and Context2 are optional and - may be NULL. The function EntryPoint must never return. - - If the current execution mode is not 32-bit paged mode, then ASSERT(). - If EntryPoint is NULL, then ASSERT(). - If NewStack is NULL, then ASSERT(). - - There are a number of constraints that must be followed before calling this - function: - 1) Interrupts must be disabled. - 2) The caller must be in 32-bit paged mode. - 3) CR0, CR3, and CR4 must be compatible with 32-bit paged mode. - 4) CR3 must point to valid page tables that guarantee that the pages for - this function and the stack are identity mapped. - - @param EntryPoint A pointer to function to call with the new stack after - paging is disabled. - @param Context1 A pointer to the context to pass into the EntryPoint - function as the first parameter after paging is disabled. - @param Context2 A pointer to the context to pass into the EntryPoint - function as the second parameter after paging is - disabled. - @param NewStack A pointer to the new stack to use for the EntryPoint - function after paging is disabled. - -**/ -VOID -EFIAPI -AsmDisablePaging32 ( - IN SWITCH_STACK_ENTRY_POINT EntryPoint, - IN VOID *Context1, OPTIONAL - IN VOID *Context2, OPTIONAL - IN VOID *NewStack - ) -{ - ASSERT (EntryPoint != NULL); - ASSERT (NewStack != NULL); - InternalX86DisablePaging32 (EntryPoint, Context1, Context2, NewStack); -}