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Functions
Synchronization.c File Reference
#include <Library/DebugLib.h>

Go to the source code of this file.

Functions

UINT32 EFIAPI AsmInternalSyncCompareExchange16 (IN volatile UINT32 *, IN UINT64, IN UINT64, IN UINT64)
 
UINT32 EFIAPI AsmInternalSyncCompareExchange32 (IN volatile UINT32 *, IN UINT64, IN UINT64)
 
UINT64 EFIAPI AsmInternalSyncCompareExchange64 (IN volatile UINT64 *, IN UINT64, IN UINT64)
 
UINT32 EFIAPI AsmInternalSyncIncrement (IN volatile UINT32 *)
 
UINT32 EFIAPI AsmInternalSyncDecrement (IN volatile UINT32 *)
 
UINT16 EFIAPI InternalSyncCompareExchange16 (IN volatile UINT16 *Value, IN UINT16 CompareValue, IN UINT16 ExchangeValue)
 
UINT32 EFIAPI InternalSyncCompareExchange32 (IN volatile UINT32 *Value, IN UINT32 CompareValue, IN UINT32 ExchangeValue)
 
UINT64 EFIAPI InternalSyncCompareExchange64 (IN volatile UINT64 *Value, IN UINT64 CompareValue, IN UINT64 ExchangeValue)
 
UINT32 EFIAPI InternalSyncIncrement (IN volatile UINT32 *Value)
 
UINT32 EFIAPI InternalSyncDecrement (IN volatile UINT32 *Value)
 

Detailed Description

LoongArch synchronization functions.

Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file Synchronization.c.

Function Documentation

◆ InternalSyncCompareExchange16()

UINT16 EFIAPI InternalSyncCompareExchange16 ( IN volatile UINT16 *  Value,
IN UINT16  CompareValue,
IN UINT16  ExchangeValue 
)

Performs an atomic compare exchange operation on a 16-bit unsigned integer.

Performs an atomic compare exchange operation on the 16-bit unsigned integer specified by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue, then Value is returned. The compare exchange operation must be performed using MP safe mechanisms.

Parameters
[in]ValueA pointer to the 16-bit value for the compare exchange operation.
[in]CompareValue16-bit value used in compare operation.
[in]ExchangeValue16-bit value used in exchange operation.
Returns
The original *Value before exchange.

Definition at line 70 of file Synchronization.c.

◆ InternalSyncCompareExchange32()

UINT32 EFIAPI InternalSyncCompareExchange32 ( IN volatile UINT32 *  Value,
IN UINT32  CompareValue,
IN UINT32  ExchangeValue 
)

Performs an atomic compare exchange operation on a 32-bit unsigned integer.

Performs an atomic compare exchange operation on the 32-bit unsigned integer specified by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue, then Value is returned. The compare exchange operation must be performed using MP safe mechanisms.

Parameters
[in]ValueA pointer to the 32-bit value for the compare exchange operation.
[in]CompareValue32-bit value used in compare operation.
[in]ExchangeValue32-bit value used in exchange operation.
Returns
The original *Value before exchange.

Definition at line 139 of file Synchronization.c.

◆ InternalSyncCompareExchange64()

UINT64 EFIAPI InternalSyncCompareExchange64 ( IN volatile UINT64 *  Value,
IN UINT64  CompareValue,
IN UINT64  ExchangeValue 
)

Performs an atomic compare exchange operation on a 64-bit unsigned integer.

Performs an atomic compare exchange operation on the 64-bit unsigned integer specified by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue, then Value is returned. The compare exchange operation must be performed using MP safe mechanisms.

Parameters
[in]ValueA pointer to the 64-bit value for the compare exchange operation.
[in]CompareValue64-bit value used in compare operation.
[in]ExchangeValue64-bit value used in exchange operation.
Returns
The original *Value before exchange.

Definition at line 174 of file Synchronization.c.

◆ InternalSyncDecrement()

UINT32 EFIAPI InternalSyncDecrement ( IN volatile UINT32 *  Value)

Performs an atomic decrement of an 32-bit unsigned integer.

Performs an atomic decrement of the 32-bit unsigned integer specified by Value and returns the decrement value. The decrement operation must be performed using MP safe mechanisms. The state of the return value is not guaranteed to be MP safe.

Parameters
[in]ValueA pointer to the 32-bit value to decrement.
Returns
The decrement value.

Definition at line 228 of file Synchronization.c.

◆ InternalSyncIncrement()

UINT32 EFIAPI InternalSyncIncrement ( IN volatile UINT32 *  Value)

Performs an atomic increment of an 32-bit unsigned integer.

Performs an atomic increment of the 32-bit unsigned integer specified by Value and returns the incremented value. The increment operation must be performed using MP safe mechanisms. The state of the return value is not guaranteed to be MP safe.

Parameters
[in]ValueA pointer to the 32-bit value to increment.
Returns
The incremented value.

Definition at line 206 of file Synchronization.c.