diff options
| -rw-r--r-- | MdePkg/Library/BaseLib/BaseLib.inf | 2 | ||||
| -rw-r--r-- | MdePkg/Library/BaseLib/Ia32/EnablePaging32.nasm | 54 |
2 files changed, 56 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf index 52e82bd74d..5f8cd45d4f 100644 --- a/MdePkg/Library/BaseLib/BaseLib.inf +++ b/MdePkg/Library/BaseLib/BaseLib.inf @@ -315,6 +315,7 @@ Ia32/FxSave.asm | INTEL
Ia32/FlushCacheLine.nasm| INTEL
Ia32/FlushCacheLine.asm | INTEL
+ Ia32/EnablePaging32.nasm| INTEL
Ia32/EnablePaging32.asm | INTEL
Ia32/EnableInterrupts.asm | INTEL
Ia32/EnableDisableInterrupts.asm | INTEL
@@ -345,6 +346,7 @@ Ia32/EnablePaging64.nasm| GCC
Ia32/EnablePaging64.S | GCC
Ia32/DisablePaging32.S | GCC
+ Ia32/EnablePaging32.nasm| GCC
Ia32/EnablePaging32.S | GCC
Ia32/Mwait.nasm| GCC
Ia32/Mwait.S | GCC
diff --git a/MdePkg/Library/BaseLib/Ia32/EnablePaging32.nasm b/MdePkg/Library/BaseLib/Ia32/EnablePaging32.nasm new file mode 100644 index 0000000000..0855f8dcbe --- /dev/null +++ b/MdePkg/Library/BaseLib/Ia32/EnablePaging32.nasm @@ -0,0 +1,54 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, 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.
+;
+; Module Name:
+;
+; EnablePaging32.Asm
+;
+; Abstract:
+;
+; AsmEnablePaging32 function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID
+; EFIAPI
+; InternalX86EnablePaging32 (
+; IN SWITCH_STACK_ENTRY_POINT EntryPoint,
+; IN VOID *Context1, OPTIONAL
+; IN VOID *Context2, OPTIONAL
+; IN VOID *NewStack
+; );
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalX86EnablePaging32)
+ASM_PFX(InternalX86EnablePaging32):
+ mov ebx, [esp + 4]
+ mov ecx, [esp + 8]
+ mov edx, [esp + 12]
+ pushfd
+ pop edi ; save flags in edi
+ cli
+ mov eax, cr0
+ bts eax, 31
+ mov esp, [esp + 16]
+ mov cr0, eax
+ push edi
+ popfd ; restore flags
+ push edx
+ push ecx
+ call ebx
+ jmp $
+
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