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/**@file
IA32 specific debug support macros, typedefs and prototypes.
Copyright (c) 2006, 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.
**/
#ifndef _PLDEBUG_SUPPORT_H
#define _PLDEBUG_SUPPORT_H
#define NUM_IDT_ENTRIES 0x78
#define SYSTEM_TIMER_VECTOR 0x68
#define VECTOR_ENTRY_PAGES 1
#define CopyDescriptor(Dest, Src) CopyMem ((Dest), (Src), sizeof (DESCRIPTOR))
#define ZeroDescriptor(Dest) CopyDescriptor ((Dest), &NullDesc)
#define ReadIdt(Vector, Dest) CopyDescriptor ((Dest), &((GetIdtr ())[(Vector)]))
#define WriteIdt(Vector, Src) CopyDescriptor (&((GetIdtr ())[(Vector)]), (Src))
#define CompareDescriptor(Desc1, Desc2) CompareMem ((Desc1), (Desc2), sizeof (DESCRIPTOR))
#define EFI_ISA IsaIa32
#define FF_FXSR (1 << 24)
typedef UINT64 DESCRIPTOR;
typedef struct {
DESCRIPTOR OrigDesc;
VOID (*OrigVector) (VOID);
DESCRIPTOR NewDesc;
VOID (*StubEntry) (VOID);
VOID (*RegisteredCallback) ();
} IDT_ENTRY;
extern EFI_SYSTEM_CONTEXT SystemContext;
extern UINT8 InterruptEntryStub[];
extern UINT32 StubSize;
extern VOID (*OrigVector) (VOID);
VOID
CommonIdtEntry (
VOID
)
/*++
Routine Description:
Generic IDT entry
Arguments:
None
Returns:
None
--*/
;
BOOLEAN
FxStorSupport (
VOID
)
/*++
Routine Description:
Check whether FXSTOR is supported
Arguments:
None
Returns:
TRUE - supported
FALSE - not supported
--*/
;
DESCRIPTOR *
GetIdtr (
VOID
)
/*++
Routine Description:
Return the physical address of IDTR
Arguments:
None
Returns:
The physical address of IDTR
--*/
;
VOID
Vect2Desc (
DESCRIPTOR * DestDesc,
VOID (*Vector) (VOID)
)
/*++
Routine Description:
Encodes an IDT descriptor with the given physical address
Arguments:
DestDesc - The IDT descriptor address
Vector - The interrupt vector entry
Returns:
None
--*/
;
BOOLEAN
WriteInterruptFlag (
BOOLEAN NewState
)
/*++
Routine Description:
Programs interrupt flag to the requested state and returns previous
state.
Arguments:
NewState - New interrupt status
Returns:
Old interrupt status
--*/
;
EFI_STATUS
plInitializeDebugSupportDriver (
VOID
)
/*++
Routine Description:
Initializes driver's handler registration database.
This code executes in boot services context.
Arguments:
None
Returns:
EFI_SUCCESS
EFI_UNSUPPORTED - if IA32 processor does not support FXSTOR/FXRSTOR instructions,
the context save will fail, so these processor's are not supported.
EFI_OUT_OF_RESOURCES - not resource to finish initialization
--*/
;
EFI_STATUS
EFIAPI
plUnloadDebugSupportDriver (
IN EFI_HANDLE ImageHandle
)
/*++
Routine Description:
This is the callback that is written to the LoadedImage protocol instance
on the image handle. It uninstalls all registered handlers and frees all entry
stub memory.
This code executes in boot services context.
Arguments:
ImageHandle - The image handle of the unload handler
Returns:
EFI_SUCCESS - always return success
--*/
;
//
// DebugSupport protocol member functions
//
EFI_STATUS
EFIAPI
GetMaximumProcessorIndex (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
OUT UINTN *MaxProcessorIndex
)
/*++
Routine Description: This is a DebugSupport protocol member function.
Arguments:
This - The DebugSupport instance
MaxProcessorIndex - The maximuim supported processor index
Returns:
Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0
--*/
;
EFI_STATUS
EFIAPI
RegisterPeriodicCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_PERIODIC_CALLBACK PeriodicCallback
)
/*++
Routine Description: This is a DebugSupport protocol member function.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
PeriodicCallback - Callback function
Returns:
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
;
EFI_STATUS
EFIAPI
RegisterExceptionCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_EXCEPTION_CALLBACK NewCallback,
IN EFI_EXCEPTION_TYPE ExceptionType
)
/*++
Routine Description:
This is a DebugSupport protocol member function.
This code executes in boot services context.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
NewCallback - Callback function
ExceptionType - Which exception to hook
Returns:
EFI_SUCCESS
EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has
no handler registered for it
EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.
Other possible return values are passed through from UnHookEntry and HookEntry.
--*/
;
EFI_STATUS
EFIAPI
InvalidateInstructionCache (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN VOID *Start,
IN UINT64 Length
)
/*++
Routine Description:
This is a DebugSupport protocol member function.
Calls assembly routine to flush cache.
Arguments:
This - The DebugSupport instance
ProcessorIndex - Which processor the callback applies to.
Start - Physical base of the memory range to be invalidated
Length - mininum number of bytes in instruction cache to invalidate
Returns:
EFI_SUCCESS - always return success
--*/
;
#endif
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