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#ifndef _EFI_LINK_H
#define _EFI_LINK_H
/*++
Copyright (c) 1998 Intel Corporation
Module Name:
link.h (renamed efilink.h to avoid conflicts)
Abstract:
EFI link list macro's
Revision History
--*/
#ifndef EFI_NT_EMUL
//
// List entry - doubly linked list
//
typedef struct _LIST_ENTRY {
struct _LIST_ENTRY *Flink;
struct _LIST_ENTRY *Blink;
} LIST_ENTRY;
#endif
//
// VOID
// InitializeListHead(
// LIST_ENTRY *ListHead
// );
//
#define InitializeListHead(ListHead) \
(ListHead)->Flink = ListHead; \
(ListHead)->Blink = ListHead;
//
// BOOLEAN
// IsListEmpty(
// PLIST_ENTRY ListHead
// );
//
#define IsListEmpty(ListHead) \
((ListHead)->Flink == (ListHead))
//
// VOID
// RemoveEntryList(
// PLIST_ENTRY Entry
// );
//
#define _RemoveEntryList(Entry) { \
LIST_ENTRY *_Blink, *_Flink; \
_Flink = (Entry)->Flink; \
_Blink = (Entry)->Blink; \
_Blink->Flink = _Flink; \
_Flink->Blink = _Blink; \
}
#if EFI_DEBUG
#define RemoveEntryList(Entry) \
_RemoveEntryList(Entry); \
(Entry)->Flink = (LIST_ENTRY *) BAD_POINTER; \
(Entry)->Blink = (LIST_ENTRY *) BAD_POINTER;
#else
#define RemoveEntryList(Entry) \
_RemoveEntryList(Entry);
#endif
//
// VOID
// InsertTailList(
// PLIST_ENTRY ListHead,
// PLIST_ENTRY Entry
// );
//
#define InsertTailList(ListHead,Entry) {\
LIST_ENTRY *_ListHead, *_Blink; \
_ListHead = (ListHead); \
_Blink = _ListHead->Blink; \
(Entry)->Flink = _ListHead; \
(Entry)->Blink = _Blink; \
_Blink->Flink = (Entry); \
_ListHead->Blink = (Entry); \
}
//
// VOID
// InsertHeadList(
// PLIST_ENTRY ListHead,
// PLIST_ENTRY Entry
// );
//
#define InsertHeadList(ListHead,Entry) {\
LIST_ENTRY *_ListHead, *_Flink; \
_ListHead = (ListHead); \
_Flink = _ListHead->Flink; \
(Entry)->Flink = _Flink; \
(Entry)->Blink = _ListHead; \
_Flink->Blink = (Entry); \
_ListHead->Flink = (Entry); \
}
// VOID
// SwapListEntries(
// PLIST_ENTRY Entry1,
// PLIST_ENTRY Entry2
// );
//
// Put Entry2 before Entry1
//
#define SwapListEntries(Entry1,Entry2) {\
LIST_ENTRY *Entry1Flink, *Entry1Blink; \
LIST_ENTRY *Entry2Flink, *Entry2Blink; \
Entry2Flink = (Entry2)->Flink; \
Entry2Blink = (Entry2)->Blink; \
Entry1Flink = (Entry1)->Flink; \
Entry1Blink = (Entry1)->Blink; \
Entry2Blink->Flink = Entry2Flink; \
Entry2Flink->Blink = Entry2Blink; \
(Entry2)->Flink = Entry1; \
(Entry2)->Blink = Entry1Blink; \
Entry1Blink->Flink = (Entry2); \
(Entry1)->Blink = (Entry2); \
}
//
// EFI_FIELD_OFFSET - returns the byte offset to a field within a structure
//
#define EFI_FIELD_OFFSET(TYPE,Field) ((UINTN)(&(((TYPE *) 0)->Field)))
//
// CONTAINING_RECORD - returns a pointer to the structure
// from one of it's elements.
//
#define _CR(Record, TYPE, Field) \
((TYPE *) ( (CHAR8 *)(Record) - (CHAR8 *) &(((TYPE *) 0)->Field)))
#if EFI_DEBUG
#define CR(Record, TYPE, Field, Sig) \
_CR(Record, TYPE, Field)->Signature != Sig ? \
(TYPE *) ASSERT_STRUCT(_CR(Record, TYPE, Field), Record) : \
_CR(Record, TYPE, Field)
#else
#define CR(Record, TYPE, Field, Signature) \
_CR(Record, TYPE, Field)
#endif
//
// A lock structure
//
typedef struct _FLOCK {
EFI_TPL Tpl;
EFI_TPL OwnerTpl;
UINTN Lock;
} FLOCK;
#endif
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