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Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/Ipf/efijump.h')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/Ipf/efijump.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/Ipf/efijump.h b/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/Ipf/efijump.h new file mode 100644 index 0000000000..cec5364484 --- /dev/null +++ b/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/Ipf/efijump.h @@ -0,0 +1,112 @@ +/*++
+
+Copyright (c) 2004, 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.
+
+Module Name:
+
+ EfiJump.h
+
+Abstract:
+
+ This is the Setjump/Longjump pair for an IA32 processor.
+
+--*/
+
+#ifndef _EFI_JUMP_H_
+#define _EFI_JUMP_H_
+
+#include EFI_GUID_DEFINITION (PeiTransferControl)
+
+//
+// NOTE:Set/LongJump needs to have this buffer start
+// at 16 byte boundary. Either fix the structure
+// which call this buffer or fix inside SetJump/LongJump
+// Choosing 1K buffer storage for now
+//
+typedef struct {
+ CHAR8 Buffer[1024];
+} EFI_JUMP_BUFFER;
+
+EFI_STATUS
+SetJump (
+ IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This,
+ IN EFI_JUMP_BUFFER *Jump
+ )
+/*++
+
+Routine Description:
+
+ SetJump stores the current register set in the area pointed to
+by "save". It returns zero. Subsequent calls to "LongJump" will
+restore the registers and return non-zero to the same location.
+ On entry, r32 contains the pointer to the jmp_buffer
+
+Arguments:
+
+ This - Calling context
+ Jump - Jump buffer
+
+Returns:
+
+ Status code
+
+--*/
+;
+
+EFI_STATUS
+LongJump (
+ IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This,
+ IN EFI_JUMP_BUFFER *Jump
+ )
+/*++
+
+Routine Description:
+
+ LongJump initializes the register set to the values saved by a
+previous 'SetJump' and jumps to the return location saved by that
+'SetJump'. This has the effect of unwinding the stack and returning
+for a second time to the 'SetJump'.
+
+Arguments:
+
+ This - Calling context
+ Jump - Jump buffer
+
+Returns:
+
+ Status code
+
+--*/
+;
+
+VOID
+RtPioICacheFlush (
+ IN VOID *StartAddress,
+ IN UINTN SizeInBytes
+ )
+/*++
+
+Routine Description:
+
+ Flushing the CPU instruction cache.
+
+Arguments:
+
+ StartAddress - Start address to flush
+ SizeInBytes - Length in bytes to flush
+
+Returns:
+
+ None
+
+--*/
+;
+
+#endif
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