diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/IntelFsp2Pkg/Include/Library/FspSwitchStackLib.h | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/IntelFsp2Pkg/Include/Library/FspSwitchStackLib.h')
| -rw-r--r-- | roms/edk2/IntelFsp2Pkg/Include/Library/FspSwitchStackLib.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/roms/edk2/IntelFsp2Pkg/Include/Library/FspSwitchStackLib.h b/roms/edk2/IntelFsp2Pkg/Include/Library/FspSwitchStackLib.h new file mode 100644 index 000000000..f049361d7 --- /dev/null +++ b/roms/edk2/IntelFsp2Pkg/Include/Library/FspSwitchStackLib.h @@ -0,0 +1,55 @@ +/** @file
+
+ Copyright (c) 2014 - 2020, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _FSP_SWITCH_STACK_LIB_H_
+#define _FSP_SWITCH_STACK_LIB_H_
+
+/**
+
+ This function will switch the current stack to the previous saved stack.
+ Before calling the previous stack has to be set in FSP_GLOBAL_DATA.CoreStack.
+ EIP
+ FLAGS 16 bit FLAGS 16 bit
+ EDI
+ ESI
+ EBP
+ ESP
+ EBX
+ EDX
+ ECX
+ EAX
+ DWORD IDT base1
+ StackPointer: DWORD IDT base2
+
+ @return ReturnKey After switching to the saved stack,
+ this value will be saved in eax before returning.
+
+
+**/
+UINT32
+EFIAPI
+Pei2LoaderSwitchStack (
+ VOID
+ );
+
+/**
+
+ This function is equivalent to Pei2LoaderSwitchStack () but just indicates
+ the stack after switched is FSP stack.
+
+ @return ReturnKey After switching to the saved stack,
+ this value will be saved in eax before returning.
+
+
+**/
+UINT32
+EFIAPI
+Loader2PeiSwitchStack (
+ VOID
+ );
+
+#endif
|