diff options
Diffstat (limited to 'OvmfPkg/Sec/Ia32/SwitchStack.c')
| -rw-r--r-- | OvmfPkg/Sec/Ia32/SwitchStack.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/OvmfPkg/Sec/Ia32/SwitchStack.c b/OvmfPkg/Sec/Ia32/SwitchStack.c deleted file mode 100644 index 9fb18933da..0000000000 --- a/OvmfPkg/Sec/Ia32/SwitchStack.c +++ /dev/null @@ -1,136 +0,0 @@ -/** @file
- Switch Stack functions.
-
- Copyright (c) 2006 - 2007, 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.
-
-**/
-
-//
-// Include common header file for this module.
-//
-
-
-#include <Library/BaseLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/DebugLib.h>
-#include <Library/PeiServicesLib.h>
-
-/**
- Transfers control to a function starting with a new stack.
-
- Transfers control 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 EntryPoint is NULL, then ASSERT().
- If NewStack is NULL, then ASSERT().
-
- @param EntryPoint A pointer to function to call with the new stack.
- @param Context1 A pointer to the context to pass into the EntryPoint
- function.
- @param Context2 A pointer to the context to pass into the EntryPoint
- function.
- @param NewStack A pointer to the new stack to use for the EntryPoint
- function.
- @param NewBsp A pointer to the new BSP for the EntryPoint on IPF. It's
- Reserved on other architectures.
-
-**/
-VOID
-EFIAPI
-PeiSwitchStacks (
- IN SWITCH_STACK_ENTRY_POINT EntryPoint,
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2, OPTIONAL
- IN VOID *Context3, OPTIONAL
- IN VOID *OldTopOfStack,
- IN VOID *NewStack
- )
-{
- BASE_LIBRARY_JUMP_BUFFER JumpBuffer;
-
- ASSERT (EntryPoint != NULL);
- ASSERT (NewStack != NULL);
-
- //
- // Stack should be aligned with CPU_STACK_ALIGNMENT
- //
- ASSERT (((UINTN)NewStack & (CPU_STACK_ALIGNMENT - 1)) == 0);
-
- JumpBuffer.Eip = (UINTN)EntryPoint;
- JumpBuffer.Esp = (UINTN)NewStack - sizeof (VOID*);
- JumpBuffer.Esp -= sizeof (Context1) + sizeof (Context2) + sizeof(Context3);
- ((VOID**)JumpBuffer.Esp)[1] = Context1;
- ((VOID**)JumpBuffer.Esp)[2] = Context2;
- ((VOID**)JumpBuffer.Esp)[3] = Context3;
-
- LongJump (&JumpBuffer, (UINTN)-1);
-
- //
- // InternalSwitchStack () will never return
- //
- ASSERT (FALSE);
-}
-
-/**
- Transfers control to a function starting with a new stack.
-
- Transfers control 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 EntryPoint is NULL, then ASSERT().
- If NewStack is NULL, then ASSERT().
-
- @param EntryPoint A pointer to function to call with the new stack.
- @param Context1 A pointer to the context to pass into the EntryPoint
- function.
- @param Context2 A pointer to the context to pass into the EntryPoint
- function.
- @param NewStack A pointer to the new stack to use for the EntryPoint
- function.
- @param NewBsp A pointer to the new BSP for the EntryPoint on IPF. It's
- Reserved on other architectures.
-
-**/
-VOID
-EFIAPI
-SecSwitchStack (
- IN UINTN TemporaryMemoryBase,
- IN UINTN PermanentMemoryBase,
- IN UINTN CopySize
- )
-{
- BASE_LIBRARY_JUMP_BUFFER JumpBuffer;
- UINTN SetJumpFlag;
-
- ASSERT ((VOID*)TemporaryMemoryBase != NULL);
- ASSERT ((VOID*)PermanentMemoryBase != NULL);
-
- SetJumpFlag = SetJump (&JumpBuffer);
- //
- // The initial call to SetJump() must always return 0.
- // Subsequent calls to LongJump() may cause a non-zero value to be returned by SetJump().
- //
- if (SetJumpFlag == 0) {
- DEBUG ((EFI_D_ERROR, "SecSwitchStack+%d: Esp: 0x%xL\n", __LINE__, JumpBuffer.Esp));
- JumpBuffer.Esp =
- (INTN)JumpBuffer.Esp -
- (INTN)TemporaryMemoryBase +
- (INTN)PermanentMemoryBase;
- MemoryFence ();
- CopyMem((VOID*)PermanentMemoryBase, (VOID*)TemporaryMemoryBase, CopySize);
- LongJump (&JumpBuffer, (UINTN)-1);
- }
-
-}
-
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