diff options
Diffstat (limited to 'roms/edk2/MdePkg/Library/BaseLib/Ia32/EnablePaging32.nasm')
| -rw-r--r-- | roms/edk2/MdePkg/Library/BaseLib/Ia32/EnablePaging32.nasm | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/Ia32/EnablePaging32.nasm b/roms/edk2/MdePkg/Library/BaseLib/Ia32/EnablePaging32.nasm new file mode 100644 index 000000000..3f00167b3 --- /dev/null +++ b/roms/edk2/MdePkg/Library/BaseLib/Ia32/EnablePaging32.nasm @@ -0,0 +1,48 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+; 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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