Sync/gnu-efi/inc/efilink.h
Curle d588e232c4 Major overhaul of this branch.
This branch has been dedicated to purely the UEFI bootloader.
As such, all other code has been removed.

This code can be compiled with Visual Studio, gcc or llvm.
2019-07-17 21:10:29 +01:00

178 lines
3.8 KiB
C

#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)(intptr_t)(&(((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