tyler.durden/audk
1
0
Fork 0
mirror of https://github.com/acidanthera/audk.git synced 2025-07-31 01:24:12 +02:00
Code Issues Packages Projects Releases Wiki Activity

Split out Synchronization Library from Base Library

Browse Source 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7378 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney 2009-01-30 00:47:57 +00:00
parent 720d3c5fb3
commit bbc3c2d526
31 changed files with 0 additions and 2482 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

116
MdePkg/Library/BaseLib/Ebc/Synchronization.c
View File

@ -1,116 +0,0 @@
/** @file
Implementation of synchronization functions on EBC.
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
/**
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.
@param Value A pointer to the 32-bit value for the
compare exchange operation.
@param CompareValue 32-bit value used in compare operation.
@param ExchangeValue 32-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT32
EFIAPI
InternalSyncCompareExchange32 (
IN volatile UINT32 *Value,
IN UINT32 CompareValue,
IN UINT32 ExchangeValue
)
{
return *Value != CompareValue ? *Value :
((*Value = ExchangeValue), CompareValue);
}
/**
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.
@param Value A pointer to the 64-bit value for the compare exchange
operation.
@param CompareValue 64-bit value used in compare operation.
@param ExchangeValue 64-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT64
EFIAPI
InternalSyncCompareExchange64 (
IN volatile UINT64 *Value,
IN UINT64 CompareValue,
IN UINT64 ExchangeValue
)
{
return *Value != CompareValue ? *Value :
((*Value = ExchangeValue), CompareValue);
}
/**
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.
@param Value A pointer to the 32-bit value to increment.
@return The incremented value.
**/
UINT32
EFIAPI
InternalSyncIncrement (
IN volatile UINT32 *Value
)
{
return ++*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.
@param Value A pointer to the 32-bit value to decrement.
@return The decrement value.
**/
UINT32
EFIAPI
InternalSyncDecrement (
IN volatile UINT32 *Value
)
{
return --*Value;
}

41
MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.S
View File

@ -1,41 +0,0 @@
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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:
#
# InterlockedCompareExchange32.S
#
# Abstract:
#
# InternalSyncCompareExchange32 function
#
# Notes:
#
#------------------------------------------------------------------------------
.globl ASM_PFX(InternalSyncCompareExchange32)
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# InternalSyncCompareExchange32 (
# IN UINT32 *Value,
# IN UINT32 CompareValue,
# IN UINT32 ExchangeValue
# );
#------------------------------------------------------------------------------
ASM_PFX(InternalSyncCompareExchange32):
movl 4(%esp), %ecx
movl 8(%esp), %eax
movl 12(%esp), %edx
lock
cmpxchgl %edx, (%ecx)
ret

45
MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.asm
View File

@ -1,45 +0,0 @@
;------------------------------------------------------------------------------
;
; 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.
;
; Module Name:
;
; InterlockedCompareExchange32.Asm
;
; Abstract:
;
; InterlockedCompareExchange32 function
;
; Notes:
;
;------------------------------------------------------------------------------
.486
.model flat,C
.code
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; InternalSyncCompareExchange32 (
; IN UINT32 *Value,
; IN UINT32 CompareValue,
; IN UINT32 ExchangeValue
; );
;------------------------------------------------------------------------------
InternalSyncCompareExchange32 PROC
mov ecx, [esp + 4]
mov eax, [esp + 8]
mov edx, [esp + 12]
lock cmpxchg [ecx], edx
ret
InternalSyncCompareExchange32 ENDP
END

50
MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.c
View File

@ -1,50 +0,0 @@
/** @file
InterlockedCompareExchange32 function
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
/**
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.
@param Value A pointer to the 32-bit value for the compare exchange
operation.
@param CompareValue 32-bit value used in compare operation.
@param ExchangeValue 32-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT32
EFIAPI
InternalSyncCompareExchange32 (
IN UINT32 *Value,
IN UINT32 CompareValue,
IN UINT32 ExchangeValue
)
{
_asm {
mov ecx, Value
mov eax, CompareValue
mov edx, ExchangeValue
lock cmpxchg [ecx], edx
}
}

47
MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange64.S
View File

@ -1,47 +0,0 @@
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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:
#
# InterlockedCompareExchange64.S
#
# Abstract:
#
# InternalSyncCompareExchange64 function
#
# Notes:
#
#------------------------------------------------------------------------------
.globl ASM_PFX(InternalSyncCompareExchange64)
#------------------------------------------------------------------------------
# UINT64
# EFIAPI
# InternalSyncCompareExchange64 (
# IN UINT64 *Value,
# IN UINT64 CompareValue,
# IN UINT64 ExchangeValue
# );
#------------------------------------------------------------------------------
ASM_PFX(InternalSyncCompareExchange64):
push %esi
push %ebx
movl 12(%esp), %esi
movl 16(%esp), %eax
movl 20(%esp), %edx
movl 24(%esp), %ebx
movl 28(%esp), %ecx
lock
cmpxchg8b (%esi)
pop %ebx
pop %esi
ret

47
MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange64.asm
View File

@ -1,47 +0,0 @@
;------------------------------------------------------------------------------
;
; 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.
;
; Module Name:
;
; InterlockedCompareExchange64.Asm
;
; Abstract:
;
; InterlockedCompareExchange64 function
;
; Notes:
;
;------------------------------------------------------------------------------
.586P
.model flat,C
.code
;------------------------------------------------------------------------------
; UINT64
; EFIAPI
; InternalSyncCompareExchange64 (
; IN UINT64 *Value,
; IN UINT64 CompareValue,
; IN UINT64 ExchangeValue
; );
;------------------------------------------------------------------------------
InternalSyncCompareExchange64 PROC USES esi ebx
mov esi, [esp + 12]
mov eax, [esp + 16]
mov edx, [esp + 20]
mov ebx, [esp + 24]
mov ecx, [esp + 28]
lock cmpxchg8b qword ptr [esi]
ret
InternalSyncCompareExchange64 ENDP
END

50
MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange64.c
View File

@ -1,50 +0,0 @@
/** @file
InterlockedCompareExchange64 function
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
/**
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.
@param Value A pointer to the 64-bit value for the compare exchange
operation.
@param CompareValue 64-bit value used in compare operation.
@param ExchangeValue 64-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT64
EFIAPI
InternalSyncCompareExchange64 (
IN UINT64 *Value,
IN UINT64 CompareValue,
IN UINT64 ExchangeValue
)
{
_asm {
mov esi, Value
mov eax, dword ptr [CompareValue + 0]
mov edx, dword ptr [CompareValue + 4]
mov ebx, dword ptr [ExchangeValue + 0]
mov ecx, dword ptr [ExchangeValue + 4]
lock cmpxchg8b qword ptr [esi]
}
}

38
MdePkg/Library/BaseLib/Ia32/InterlockedDecrement.S
View File

@ -1,38 +0,0 @@
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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:
#
# InterlockedDecrement.S
#
# Abstract:
#
# InternalSyncDecrement function
#
# Notes:
#
#------------------------------------------------------------------------------
.globl ASM_PFX(InternalSyncDecrement)
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# InternalSyncDecrement (
# IN UINT32 *Value
# );
#------------------------------------------------------------------------------
ASM_PFX(InternalSyncDecrement):
movl 4(%esp), %eax
lock
decl (%eax)
movl (%eax), %eax
ret

42
MdePkg/Library/BaseLib/Ia32/InterlockedDecrement.asm
View File

@ -1,42 +0,0 @@
;------------------------------------------------------------------------------
;
; 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.
;
; Module Name:
;
; InterlockedDecrement.Asm
;
; Abstract:
;
; InterlockedDecrement function
;
; Notes:
;
;------------------------------------------------------------------------------
.386
.model flat,C
.code
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; InternalSyncDecrement (
; IN UINT32 *Value
; );
;------------------------------------------------------------------------------
InternalSyncDecrement PROC
mov eax, [esp + 4]
lock dec dword ptr [eax]
mov eax, [eax]
ret
InternalSyncDecrement ENDP
END

42
MdePkg/Library/BaseLib/Ia32/InterlockedDecrement.c
View File

@ -1,42 +0,0 @@
/** @file
InterlockedDecrement function
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
/**
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.
@param Value A pointer to the 32-bit value to decrement.
@return The decrement value.
**/
UINT32
EFIAPI
InternalSyncDecrement (
IN UINT32 *Value
)
{
_asm {
mov eax, Value
lock dec dword ptr [eax]
mov eax, [eax]
}
}

38
MdePkg/Library/BaseLib/Ia32/InterlockedIncrement.S
View File

@ -1,38 +0,0 @@
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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:
#
# InterlockedIncrement.S
#
# Abstract:
#
# InternalSyncIncrement function
#
# Notes:
#
#------------------------------------------------------------------------------
.globl ASM_PFX(InternalSyncIncrement)
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# InternalSyncIncrement (
# IN UINT32 *Value
# );
#------------------------------------------------------------------------------
ASM_PFX(InternalSyncIncrement):
movl 4(%esp), %eax
lock
incl (%eax)
movl (%eax), %eax
ret

42
MdePkg/Library/BaseLib/Ia32/InterlockedIncrement.asm
View File

@ -1,42 +0,0 @@
;------------------------------------------------------------------------------
;
; 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.
;
; Module Name:
;
; InterlockedIncrement.Asm
;
; Abstract:
;
; InterlockedIncrement function
;
; Notes:
;
;------------------------------------------------------------------------------
.386
.model flat,C
.code
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; InternalSyncIncrement (
; IN UINT32 *Value
; );
;------------------------------------------------------------------------------
InternalSyncIncrement PROC
mov eax, [esp + 4]
lock inc dword ptr [eax]
mov eax, [eax]
ret
InternalSyncIncrement ENDP
END

43
MdePkg/Library/BaseLib/Ia32/InterlockedIncrement.c
View File

@ -1,43 +0,0 @@
/** @file
InterLockedIncrement function
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
/**
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.
@param Value A pointer to the 32-bit value to increment.
@return The incremented value.
**/
UINT32
EFIAPI
InternalSyncIncrement (
IN UINT32 *Value
)
{
_asm {
mov eax, Value
lock inc dword ptr [eax]
mov eax, [eax]
}
}

29
MdePkg/Library/BaseLib/Ipf/InterlockedCompareExchange32.s
View File

@ -1,29 +0,0 @@
/// @file
/// Contains an implementation of InterlockedCompareExchange32 on Itanium-
/// based architecture.
///
/// Copyright (c) 2006 - 2008, 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: InterlockedCompareExchange32.s
///
///
.auto
.text
.proc InternalSyncCompareExchange32
.type InternalSyncCompareExchange32, @function
InternalSyncCompareExchange32::
zxt4 r33 = r33
mov ar.ccv = r33
cmpxchg4.rel r8 = [r32], r34
mf
br.ret.sptk.many b0
.endp InternalSyncCompareExchange32

28
MdePkg/Library/BaseLib/Ipf/InterlockedCompareExchange64.s
View File

@ -1,28 +0,0 @@
/// @file
/// Contains an implementation of InterlockedCompareExchange64 on Itanium-
/// based architecture.
///
/// Copyright (c) 2006 - 2008, 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: InterlockedCompareExchange64.s
///
///
.auto
.text
.proc InternalSyncCompareExchange64
.type InternalSyncCompareExchange64, @function
InternalSyncCompareExchange64::
mov ar.ccv = r33
cmpxchg8.rel r8 = [r32], r34
mf
br.ret.sptk.many b0
.endp InternalSyncCompareExchange64

77
MdePkg/Library/BaseLib/Ipf/Synchronization.c
View File

@ -1,77 +0,0 @@
/** @file
Implementation of synchronization functions on Itanium.
Copyright (c) 2006, Intel Corporation<BR>
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.
**/
#include "BaseLibInternals.h"
/**
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.
@param Value A pointer to the 32-bit value to increment.
@return The incremented value.
**/
UINT32
EFIAPI
InternalSyncIncrement (
IN volatile UINT32 *Value
)
{
UINT32 OriginalValue;
do {
OriginalValue = *Value;
} while (OriginalValue != InternalSyncCompareExchange32 (
Value,
OriginalValue,
OriginalValue + 1
));
return OriginalValue + 1;
}
/**
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.
@param Value A pointer to the 32-bit value to decrement.
@return The decrement value.
**/
UINT32
EFIAPI
InternalSyncDecrement (
IN volatile UINT32 *Value
)
{
UINT32 OriginalValue;
do {
OriginalValue = *Value;
} while (OriginalValue != InternalSyncCompareExchange32 (
Value,
OriginalValue,
OriginalValue - 1
));
return OriginalValue - 1;
}

387
MdePkg/Library/BaseLib/Synchronization.c
View File

@ -1,387 +0,0 @@
/** @file
Implementation of synchronization functions.
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
#include "BaseLibInternals.h"
#define SPIN_LOCK_RELEASED ((UINTN) 1)
#define SPIN_LOCK_ACQUIRED ((UINTN) 2)
/**
Retrieves the architecture specific spin lock alignment requirements for
optimal spin lock performance.
This function retrieves the spin lock alignment requirements for optimal
performance on a given CPU architecture. The spin lock alignment must be a
power of two and is returned by this function. If there are no alignment
requirements, then 1 must be returned. The spin lock synchronization
functions must function correctly if the spin lock size and alignment values
returned by this function are not used at all. These values are hints to the
consumers of the spin lock synchronization functions to obtain optimal spin
lock performance.
@return The architecture specific spin lock alignment.
**/
UINTN
EFIAPI
GetSpinLockProperties (
VOID
)
{
return 32;
}
/**
Initializes a spin lock to the released state and returns the spin lock.
This function initializes the spin lock specified by SpinLock to the released
state, and returns SpinLock. Optimal performance can be achieved by calling
GetSpinLockProperties() to determine the size and alignment requirements for
SpinLock.
If SpinLock is NULL, then ASSERT().
@param SpinLock A pointer to the spin lock to initialize to the released
state.
@return SpinLock in release state.
**/
SPIN_LOCK *
EFIAPI
InitializeSpinLock (
OUT SPIN_LOCK *SpinLock
)
{
ASSERT (SpinLock != NULL);
*SpinLock = SPIN_LOCK_RELEASED;
return SpinLock;
}
/**
Waits until a spin lock can be placed in the acquired state.
This function checks the state of the spin lock specified by SpinLock. If
SpinLock is in the released state, then this function places SpinLock in the
acquired state and returns SpinLock. Otherwise, this function waits
indefinitely for the spin lock to be released, and then places it in the
acquired state and returns SpinLock. All state transitions of SpinLock must
be performed using MP safe mechanisms.
If SpinLock is NULL, then ASSERT().
If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
If PcdSpinLockTimeout is not zero, and SpinLock is can not be acquired in
PcdSpinLockTimeout microseconds, then ASSERT().
@param SpinLock A pointer to the spin lock to place in the acquired state.
@return SpinLock acquired lock.
**/
SPIN_LOCK *
EFIAPI
AcquireSpinLock (
IN OUT SPIN_LOCK *SpinLock
)
{
UINT64 Current;
UINT64 Previous;
UINT64 Total;
UINT64 Start;
UINT64 End;
UINT64 Timeout;
INT64 Cycle;
INT64 Delta;
if (PcdGet32 (PcdSpinLockTimeout) > 0) {
//
// Get the current timer value
//
Current = GetPerformanceCounter();
//
// Initialize local variables
//
Start = 0;
End = 0;
Total = 0;
//
// Retrieve the performance counter properties and compute the number of performance
// counter ticks required to reach the timeout
//
Timeout = DivU64x32 (
MultU64x32 (
GetPerformanceCounterProperties (&Start, &End),
PcdGet32 (PcdSpinLockTimeout)
),
1000000
);
Cycle = End - Start;
if (Cycle < 0) {
Cycle = -Cycle;
}
Cycle++;
while (!AcquireSpinLockOrFail (SpinLock)) {
CpuPause ();
Previous = Current;
Current = GetPerformanceCounter();
Delta = (INT64) (Current - Previous);
if (Start > End) {
Delta = -Delta;
}
if (Delta < 0) {
Delta += Cycle;
}
Total += Delta;
ASSERT (Total < Timeout);
}
} else {
while (!AcquireSpinLockOrFail (SpinLock)) {
CpuPause ();
}
}
return SpinLock;
}
/**
Attempts to place a spin lock in the acquired state.
This function checks the state of the spin lock specified by SpinLock. If
SpinLock is in the released state, then this function places SpinLock in the
acquired state and returns TRUE. Otherwise, FALSE is returned. All state
transitions of SpinLock must be performed using MP safe mechanisms.
If SpinLock is NULL, then ASSERT().
If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
@param SpinLock A pointer to the spin lock to place in the acquired state.
@retval TRUE SpinLock was placed in the acquired state.
@retval FALSE SpinLock could not be acquired.
**/
BOOLEAN
EFIAPI
AcquireSpinLockOrFail (
IN OUT SPIN_LOCK *SpinLock
)
{
SPIN_LOCK LockValue;
ASSERT (SpinLock != NULL);
LockValue = *SpinLock;
ASSERT (SPIN_LOCK_ACQUIRED == LockValue || SPIN_LOCK_RELEASED == LockValue);
return (BOOLEAN)(
InterlockedCompareExchangePointer (
(VOID**)SpinLock,
(VOID*)SPIN_LOCK_RELEASED,
(VOID*)SPIN_LOCK_ACQUIRED
) == (VOID*)SPIN_LOCK_RELEASED
);
}
/**
Releases a spin lock.
This function places the spin lock specified by SpinLock in the release state
and returns SpinLock.
If SpinLock is NULL, then ASSERT().
If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
@param SpinLock A pointer to the spin lock to release.
@return SpinLock released lock.
**/
SPIN_LOCK *
EFIAPI
ReleaseSpinLock (
IN OUT SPIN_LOCK *SpinLock
)
{
SPIN_LOCK LockValue;
ASSERT (SpinLock != NULL);
LockValue = *SpinLock;
ASSERT (SPIN_LOCK_ACQUIRED == LockValue || SPIN_LOCK_RELEASED == LockValue);
*SpinLock = SPIN_LOCK_RELEASED;
return SpinLock;
}
/**
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.
If Value is NULL, then ASSERT().
@param Value A pointer to the 32-bit value to increment.
@return The incremented value.
**/
UINT32
EFIAPI
InterlockedIncrement (
IN UINT32 *Value
)
{
ASSERT (Value != NULL);
return InternalSyncIncrement (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 decremented value. The decrement operation must be
performed using MP safe mechanisms. The state of the return value is not
guaranteed to be MP safe.
If Value is NULL, then ASSERT().
@param Value A pointer to the 32-bit value to decrement.
@return The decremented value.
**/
UINT32
EFIAPI
InterlockedDecrement (
IN UINT32 *Value
)
{
ASSERT (Value != NULL);
return InternalSyncDecrement (Value);
}
/**
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.
If Value is NULL, then ASSERT().
@param Value A pointer to the 32-bit value for the compare exchange
operation.
@param CompareValue 32-bit value used in compare operation.
@param ExchangeValue 32-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT32
EFIAPI
InterlockedCompareExchange32 (
IN OUT UINT32 *Value,
IN UINT32 CompareValue,
IN UINT32 ExchangeValue
)
{
ASSERT (Value != NULL);
return InternalSyncCompareExchange32 (Value, CompareValue, 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.
If Value is NULL, then ASSERT().
@param Value A pointer to the 64-bit value for the compare exchange
operation.
@param CompareValue 64-bit value used in compare operation.
@param ExchangeValue 64-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT64
EFIAPI
InterlockedCompareExchange64 (
IN OUT UINT64 *Value,
IN UINT64 CompareValue,
IN UINT64 ExchangeValue
)
{
ASSERT (Value != NULL);
return InternalSyncCompareExchange64 (Value, CompareValue, ExchangeValue);
}
/**
Performs an atomic compare exchange operation on a pointer value.
Performs an atomic compare exchange operation on the pointer value 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.
If Value is NULL, then ASSERT().
@param Value A pointer to the pointer value for the compare exchange
operation.
@param CompareValue Pointer value used in compare operation.
@param ExchangeValue Pointer value used in exchange operation.
@return The original *Value before exchange.
**/
VOID *
EFIAPI
InterlockedCompareExchangePointer (
IN OUT VOID **Value,
IN VOID *CompareValue,
IN VOID *ExchangeValue
)
{
UINT8 SizeOfValue;
SizeOfValue = sizeof (*Value);
switch (SizeOfValue) {
case sizeof (UINT32):
return (VOID*)(UINTN)InterlockedCompareExchange32 (
(UINT32*)Value,
(UINT32)(UINTN)CompareValue,
(UINT32)(UINTN)ExchangeValue
);
case sizeof (UINT64):
return (VOID*)(UINTN)InterlockedCompareExchange64 (
(UINT64*)Value,
(UINT64)(UINTN)CompareValue,
(UINT64)(UINTN)ExchangeValue
);
default:
ASSERT (FALSE);
return NULL;
}
}

405
MdePkg/Library/BaseLib/SynchronizationGcc.c
View File

@ -1,405 +0,0 @@
/** @file
Implementation of synchronization functions.
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
#include "BaseLibInternals.h"
//
// GCC inline assembly for Read Write Barrier
//
#define _ReadWriteBarrier() do { asm volatile ("": : : "memory"); } while(0)
#define SPIN_LOCK_RELEASED ((UINTN) 1)
#define SPIN_LOCK_ACQUIRED ((UINTN) 2)
/**
Retrieves the architecture specific spin lock alignment requirements for
optimal spin lock performance.
This function retrieves the spin lock alignment requirements for optimal
performance on a given CPU architecture. The spin lock alignment must be a
power of two and is returned by this function. If there are no alignment
requirements, then 1 must be returned. The spin lock synchronization
functions must function correctly if the spin lock size and alignment values
returned by this function are not used at all. These values are hints to the
consumers of the spin lock synchronization functions to obtain optimal spin
lock performance.
@return The architecture specific spin lock alignment.
**/
UINTN
EFIAPI
GetSpinLockProperties (
VOID
)
{
return 32;
}
/**
Initializes a spin lock to the released state and returns the spin lock.
This function initializes the spin lock specified by SpinLock to the released
state, and returns SpinLock. Optimal performance can be achieved by calling
GetSpinLockProperties() to determine the size and alignment requirements for
SpinLock.
If SpinLock is NULL, then ASSERT().
@param SpinLock A pointer to the spin lock to initialize to the released
state.
@return SpinLock in release state.
**/
SPIN_LOCK *
EFIAPI
InitializeSpinLock (
OUT SPIN_LOCK *SpinLock
)
{
ASSERT (SpinLock != NULL);
_ReadWriteBarrier();
*SpinLock = SPIN_LOCK_RELEASED;
_ReadWriteBarrier();
return SpinLock;
}
/**
Waits until a spin lock can be placed in the acquired state.
This function checks the state of the spin lock specified by SpinLock. If
SpinLock is in the released state, then this function places SpinLock in the
acquired state and returns SpinLock. Otherwise, this function waits
indefinitely for the spin lock to be released, and then places it in the
acquired state and returns SpinLock. All state transitions of SpinLock must
be performed using MP safe mechanisms.
If SpinLock is NULL, then ASSERT().
If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
If PcdSpinLockTimeout is not zero, and SpinLock is can not be acquired in
PcdSpinLockTimeout microseconds, then ASSERT().
@param SpinLock A pointer to the spin lock to place in the acquired state.
@return SpinLock acquired lock.
**/
SPIN_LOCK *
EFIAPI
AcquireSpinLock (
IN OUT SPIN_LOCK *SpinLock
)
{
UINT64 Current;
UINT64 Previous;
UINT64 Total;
UINT64 Start;
UINT64 End;
UINT64 Timeout;
INT64 Cycle;
INT64 Delta;
if (PcdGet32 (PcdSpinLockTimeout) > 0) {
//
// Get the current timer value
//
Current = GetPerformanceCounter();
//
// Initialize local variables
//
Start = 0;
End = 0;
Total = 0;
//
// Retrieve the performance counter properties and compute the number of performance
// counter ticks required to reach the timeout
//
Timeout = DivU64x32 (
MultU64x32 (
GetPerformanceCounterProperties (&Start, &End),
PcdGet32 (PcdSpinLockTimeout)
),
1000000
);
Cycle = End - Start;
if (Cycle < 0) {
Cycle = -Cycle;
}
Cycle++;
while (!AcquireSpinLockOrFail (SpinLock)) {
CpuPause ();
Previous = Current;
Current = GetPerformanceCounter();
Delta = (INT64) (Current - Previous);
if (Start > End) {
Delta = -Delta;
}
if (Delta < 0) {
Delta += Cycle;
}
Total += Delta;
ASSERT (Total < Timeout);
}
} else {
while (!AcquireSpinLockOrFail (SpinLock)) {
CpuPause ();
}
}
return SpinLock;
}
/**
Attempts to place a spin lock in the acquired state.
This function checks the state of the spin lock specified by SpinLock. If
SpinLock is in the released state, then this function places SpinLock in the
acquired state and returns TRUE. Otherwise, FALSE is returned. All state
transitions of SpinLock must be performed using MP safe mechanisms.
If SpinLock is NULL, then ASSERT().
If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
@param SpinLock A pointer to the spin lock to place in the acquired state.
@retval TRUE SpinLock was placed in the acquired state.
@retval FALSE SpinLock could not be acquired.
**/
BOOLEAN
EFIAPI
AcquireSpinLockOrFail (
IN OUT SPIN_LOCK *SpinLock
)
{
SPIN_LOCK LockValue;
VOID *Result;
ASSERT (SpinLock != NULL);
LockValue = *SpinLock;
ASSERT (LockValue == SPIN_LOCK_ACQUIRED || LockValue == SPIN_LOCK_RELEASED);
_ReadWriteBarrier ();
Result = InterlockedCompareExchangePointer (
(VOID**)SpinLock,
(VOID*)SPIN_LOCK_RELEASED,
(VOID*)SPIN_LOCK_ACQUIRED
);
_ReadWriteBarrier ();
return (BOOLEAN) (Result == (VOID*) SPIN_LOCK_RELEASED);
}
/**
Releases a spin lock.
This function places the spin lock specified by SpinLock in the release state
and returns SpinLock.
If SpinLock is NULL, then ASSERT().
If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
@param SpinLock A pointer to the spin lock to release.
@return SpinLock released lock.
**/
SPIN_LOCK *
EFIAPI
ReleaseSpinLock (
IN OUT SPIN_LOCK *SpinLock
)
{
SPIN_LOCK LockValue;
ASSERT (SpinLock != NULL);
LockValue = *SpinLock;
ASSERT (LockValue == SPIN_LOCK_ACQUIRED || LockValue == SPIN_LOCK_RELEASED);
_ReadWriteBarrier ();
*SpinLock = SPIN_LOCK_RELEASED;
_ReadWriteBarrier ();
return SpinLock;
}
/**
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.
If Value is NULL, then ASSERT().
@param Value A pointer to the 32-bit value to increment.
@return The incremented value.
**/
UINT32
EFIAPI
InterlockedIncrement (
IN UINT32 *Value
)
{
ASSERT (Value != NULL);
return InternalSyncIncrement (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 decremented value. The decrement operation must be
performed using MP safe mechanisms. The state of the return value is not
guaranteed to be MP safe.
If Value is NULL, then ASSERT().
@param Value A pointer to the 32-bit value to decrement.
@return The decremented value.
**/
UINT32
EFIAPI
InterlockedDecrement (
IN UINT32 *Value
)
{
ASSERT (Value != NULL);
return InternalSyncDecrement (Value);
}
/**
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.
If Value is NULL, then ASSERT().
@param Value A pointer to the 32-bit value for the compare exchange
operation.
@param CompareValue 32-bit value used in compare operation.
@param ExchangeValue 32-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT32
EFIAPI
InterlockedCompareExchange32 (
IN OUT UINT32 *Value,
IN UINT32 CompareValue,
IN UINT32 ExchangeValue
)
{
ASSERT (Value != NULL);
return InternalSyncCompareExchange32 (Value, CompareValue, 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.
If Value is NULL, then ASSERT().
@param Value A pointer to the 64-bit value for the compare exchange
operation.
@param CompareValue 64-bit value used in compare operation.
@param ExchangeValue 64-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT64
EFIAPI
InterlockedCompareExchange64 (
IN OUT UINT64 *Value,
IN UINT64 CompareValue,
IN UINT64 ExchangeValue
)
{
ASSERT (Value != NULL);
return InternalSyncCompareExchange64 (Value, CompareValue, ExchangeValue);
}
/**
Performs an atomic compare exchange operation on a pointer value.
Performs an atomic compare exchange operation on the pointer value 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.
If Value is NULL, then ASSERT().
@param Value A pointer to the pointer value for the compare exchange
operation.
@param CompareValue Pointer value used in compare operation.
@param ExchangeValue Pointer value used in exchange operation.
@return The original *Value before exchange.
**/
VOID *
EFIAPI
InterlockedCompareExchangePointer (
IN OUT VOID **Value,
IN VOID *CompareValue,
IN VOID *ExchangeValue
)
{
UINT8 SizeOfValue;
SizeOfValue = sizeof (*Value);
switch (SizeOfValue) {
case sizeof (UINT32):
return (VOID*)(UINTN)InterlockedCompareExchange32 (
(UINT32*)Value,
(UINT32)(UINTN)CompareValue,
(UINT32)(UINTN)ExchangeValue
);
case sizeof (UINT64):
return (VOID*)(UINTN)InterlockedCompareExchange64 (
(UINT64*)Value,
(UINT64)(UINTN)CompareValue,
(UINT64)(UINTN)ExchangeValue
);
default:
ASSERT (FALSE);
return NULL;
}
}

408
MdePkg/Library/BaseLib/SynchronizationMsc.c
View File

@ -1,408 +0,0 @@
/** @file
Implementation of synchronization functions.
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
#include "BaseLibInternals.h"
/**
Microsoft Visual Studio 7.1 Function Prototypes for read write barrier Intrinsics.
**/
void _ReadWriteBarrier (void);
#pragma intrinsic(_ReadWriteBarrier)
#define SPIN_LOCK_RELEASED ((UINTN) 1)
#define SPIN_LOCK_ACQUIRED ((UINTN) 2)
/**
Retrieves the architecture specific spin lock alignment requirements for
optimal spin lock performance.
This function retrieves the spin lock alignment requirements for optimal
performance on a given CPU architecture. The spin lock alignment must be a
power of two and is returned by this function. If there are no alignment
requirements, then 1 must be returned. The spin lock synchronization
functions must function correctly if the spin lock size and alignment values
returned by this function are not used at all. These values are hints to the
consumers of the spin lock synchronization functions to obtain optimal spin
lock performance.
@return The architecture specific spin lock alignment.
**/
UINTN
EFIAPI
GetSpinLockProperties (
VOID
)
{
return 32;
}
/**
Initializes a spin lock to the released state and returns the spin lock.
This function initializes the spin lock specified by SpinLock to the released
state, and returns SpinLock. Optimal performance can be achieved by calling
GetSpinLockProperties() to determine the size and alignment requirements for
SpinLock.
If SpinLock is NULL, then ASSERT().
@param SpinLock A pointer to the spin lock to initialize to the released
state.
@return SpinLock in release state.
**/
SPIN_LOCK *
EFIAPI
InitializeSpinLock (
OUT SPIN_LOCK *SpinLock
)
{
ASSERT (SpinLock != NULL);
_ReadWriteBarrier();
*SpinLock = SPIN_LOCK_RELEASED;
_ReadWriteBarrier();
return SpinLock;
}
/**
Waits until a spin lock can be placed in the acquired state.
This function checks the state of the spin lock specified by SpinLock. If
SpinLock is in the released state, then this function places SpinLock in the
acquired state and returns SpinLock. Otherwise, this function waits
indefinitely for the spin lock to be released, and then places it in the
acquired state and returns SpinLock. All state transitions of SpinLock must
be performed using MP safe mechanisms.
If SpinLock is NULL, then ASSERT().
If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
If PcdSpinLockTimeout is not zero, and SpinLock is can not be acquired in
PcdSpinLockTimeout microseconds, then ASSERT().
@param SpinLock A pointer to the spin lock to place in the acquired state.
@return SpinLock acquired lock.
**/
SPIN_LOCK *
EFIAPI
AcquireSpinLock (
IN OUT SPIN_LOCK *SpinLock
)
{
UINT64 Current;
UINT64 Previous;
UINT64 Total;
UINT64 Start;
UINT64 End;
UINT64 Timeout;
INT64 Cycle;
INT64 Delta;
if (PcdGet32 (PcdSpinLockTimeout) > 0) {
//
// Get the current timer value
//
Current = GetPerformanceCounter();
//
// Initialize local variables
//
Start = 0;
End = 0;
Total = 0;
//
// Retrieve the performance counter properties and compute the number of performance
// counter ticks required to reach the timeout
//
Timeout = DivU64x32 (
MultU64x32 (
GetPerformanceCounterProperties (&Start, &End),
PcdGet32 (PcdSpinLockTimeout)
),
1000000
);
Cycle = End - Start;
if (Cycle < 0) {
Cycle = -Cycle;
}
Cycle++;
while (!AcquireSpinLockOrFail (SpinLock)) {
CpuPause ();
Previous = Current;
Current = GetPerformanceCounter();
Delta = (INT64) (Current - Previous);
if (Start > End) {
Delta = -Delta;
}
if (Delta < 0) {
Delta += Cycle;
}
Total += Delta;
ASSERT (Total < Timeout);
}
} else {
while (!AcquireSpinLockOrFail (SpinLock)) {
CpuPause ();
}
}
return SpinLock;
}
/**
Attempts to place a spin lock in the acquired state.
This function checks the state of the spin lock specified by SpinLock. If
SpinLock is in the released state, then this function places SpinLock in the
acquired state and returns TRUE. Otherwise, FALSE is returned. All state
transitions of SpinLock must be performed using MP safe mechanisms.
If SpinLock is NULL, then ASSERT().
If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
@param SpinLock A pointer to the spin lock to place in the acquired state.
@retval TRUE SpinLock was placed in the acquired state.
@retval FALSE SpinLock could not be acquired.
**/
BOOLEAN
EFIAPI
AcquireSpinLockOrFail (
IN OUT SPIN_LOCK *SpinLock
)
{
SPIN_LOCK LockValue;
VOID *Result;
ASSERT (SpinLock != NULL);
LockValue = *SpinLock;
ASSERT (LockValue == SPIN_LOCK_ACQUIRED || LockValue == SPIN_LOCK_RELEASED);
_ReadWriteBarrier ();
Result = InterlockedCompareExchangePointer (
(VOID**)SpinLock,
(VOID*)SPIN_LOCK_RELEASED,
(VOID*)SPIN_LOCK_ACQUIRED
);
_ReadWriteBarrier ();
return (BOOLEAN) (Result == (VOID*) SPIN_LOCK_RELEASED);
}
/**
Releases a spin lock.
This function places the spin lock specified by SpinLock in the release state
and returns SpinLock.
If SpinLock is NULL, then ASSERT().
If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
@param SpinLock A pointer to the spin lock to release.
@return SpinLock released lock.
**/
SPIN_LOCK *
EFIAPI
ReleaseSpinLock (
IN OUT SPIN_LOCK *SpinLock
)
{
SPIN_LOCK LockValue;
ASSERT (SpinLock != NULL);
LockValue = *SpinLock;
ASSERT (LockValue == SPIN_LOCK_ACQUIRED || LockValue == SPIN_LOCK_RELEASED);
_ReadWriteBarrier ();
*SpinLock = SPIN_LOCK_RELEASED;
_ReadWriteBarrier ();
return SpinLock;
}
/**
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.
If Value is NULL, then ASSERT().
@param Value A pointer to the 32-bit value to increment.
@return The incremented value.
**/
UINT32
EFIAPI
InterlockedIncrement (
IN UINT32 *Value
)
{
ASSERT (Value != NULL);
return InternalSyncIncrement (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 decremented value. The decrement operation must be
performed using MP safe mechanisms. The state of the return value is not
guaranteed to be MP safe.
If Value is NULL, then ASSERT().
@param Value A pointer to the 32-bit value to decrement.
@return The decremented value.
**/
UINT32
EFIAPI
InterlockedDecrement (
IN UINT32 *Value
)
{
ASSERT (Value != NULL);
return InternalSyncDecrement (Value);
}
/**
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.
If Value is NULL, then ASSERT().
@param Value A pointer to the 32-bit value for the compare exchange
operation.
@param CompareValue 32-bit value used in compare operation.
@param ExchangeValue 32-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT32
EFIAPI
InterlockedCompareExchange32 (
IN OUT UINT32 *Value,
IN UINT32 CompareValue,
IN UINT32 ExchangeValue
)
{
ASSERT (Value != NULL);
return InternalSyncCompareExchange32 (Value, CompareValue, 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.
If Value is NULL, then ASSERT().
@param Value A pointer to the 64-bit value for the compare exchange
operation.
@param CompareValue 64-bit value used in compare operation.
@param ExchangeValue 64-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT64
EFIAPI
InterlockedCompareExchange64 (
IN OUT UINT64 *Value,
IN UINT64 CompareValue,
IN UINT64 ExchangeValue
)
{
ASSERT (Value != NULL);
return InternalSyncCompareExchange64 (Value, CompareValue, ExchangeValue);
}
/**
Performs an atomic compare exchange operation on a pointer value.
Performs an atomic compare exchange operation on the pointer value 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.
If Value is NULL, then ASSERT().
@param Value A pointer to the pointer value for the compare exchange
operation.
@param CompareValue Pointer value used in compare operation.
@param ExchangeValue Pointer value used in exchange operation.
@return The original *Value before exchange.
**/
VOID *
EFIAPI
InterlockedCompareExchangePointer (
IN OUT VOID **Value,
IN VOID *CompareValue,
IN VOID *ExchangeValue
)
{
UINT8 SizeOfValue;
SizeOfValue = sizeof (*Value);
switch (SizeOfValue) {
case sizeof (UINT32):
return (VOID*)(UINTN)InterlockedCompareExchange32 (
(UINT32*)Value,
(UINT32)(UINTN)CompareValue,
(UINT32)(UINTN)ExchangeValue
);
case sizeof (UINT64):
return (VOID*)(UINTN)InterlockedCompareExchange64 (
(UINT64*)Value,
(UINT64)(UINTN)CompareValue,
(UINT64)(UINTN)ExchangeValue
);
default:
ASSERT (FALSE);
return NULL;
}
}

37
MdePkg/Library/BaseLib/X64/InterlockedCompareExchange32.S
View File

@ -1,37 +0,0 @@
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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:
#
# InterlockedCompareExchange32.S
#
# Abstract:
#
# InterlockedCompareExchange32 function
#
# Notes:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# InterlockedCompareExchange32 (
# IN UINT32 *Value,
# IN UINT32 CompareValue,
# IN UINT32 ExchangeValue
# );
#------------------------------------------------------------------------------
.global ASM_PFX(InternalSyncCompareExchange32)
ASM_PFX(InternalSyncCompareExchange32):
mov %edx, %eax
lock cmpxchg %r8d, (%rcx)
ret

41
MdePkg/Library/BaseLib/X64/InterlockedCompareExchange32.asm
View File

@ -1,41 +0,0 @@
;------------------------------------------------------------------------------
;
; 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.
;
; Module Name:
;
; InterlockedCompareExchange32.Asm
;
; Abstract:
;
; InterlockedCompareExchange32 function
;
; Notes:
;
;------------------------------------------------------------------------------
.code
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; InterlockedCompareExchange32 (
; IN UINT32 *Value,
; IN UINT32 CompareValue,
; IN UINT32 ExchangeValue
; );
;------------------------------------------------------------------------------
InternalSyncCompareExchange32 PROC
mov eax, edx
lock cmpxchg [rcx], r8d
ret
InternalSyncCompareExchange32 ENDP
END

54
MdePkg/Library/BaseLib/X64/InterlockedCompareExchange32.c
View File

@ -1,54 +0,0 @@
/** @file
InterlockedCompareExchange32 function
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
/**
Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
**/
long _InterlockedCompareExchange(
long volatile * Destination,
long Exchange,
long Comperand
);
#pragma intrinsic(_InterlockedCompareExchange)
/**
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.
@param Value A pointer to the 32-bit value for the compare exchange
operation.
@param CompareValue 32-bit value used in compare operation.
@param ExchangeValue 32-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT32
EFIAPI
InternalSyncCompareExchange32 (
IN UINT32 *Value,
IN UINT32 CompareValue,
IN UINT32 ExchangeValue
)
{
return _InterlockedCompareExchange (Value, ExchangeValue, CompareValue);
}

39
MdePkg/Library/BaseLib/X64/InterlockedCompareExchange64.S
View File

@ -1,39 +0,0 @@
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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:
#
# InterlockedCompareExchange64.S
#
# Abstract:
#
# InterlockedCompareExchange64 function
#
# Notes:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# UINT64
# EFIAPI
# InterlockedCompareExchange64 (
# IN UINT64 *Value,
# IN UINT64 CompareValue,
# IN UINT64 ExchangeValue
# );
#------------------------------------------------------------------------------
.global ASM_PFX(InternalSyncCompareExchange64)
.align 16
ASM_PFX(InternalSyncCompareExchange64):
mov %rdx, %rax
lock cmpxchg %r8,(%rcx)
ret

41
MdePkg/Library/BaseLib/X64/InterlockedCompareExchange64.asm
View File

@ -1,41 +0,0 @@
;------------------------------------------------------------------------------
;
; 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.
;
; Module Name:
;
; InterlockedCompareExchange64.Asm
;
; Abstract:
;
; InterlockedCompareExchange64 function
;
; Notes:
;
;------------------------------------------------------------------------------
.code
;------------------------------------------------------------------------------
; UINT64
; EFIAPI
; InterlockedCompareExchange64 (
; IN UINT64 *Value,
; IN UINT64 CompareValue,
; IN UINT64 ExchangeValue
; );
;------------------------------------------------------------------------------
InternalSyncCompareExchange64 PROC
mov rax, rdx
lock cmpxchg [rcx], r8
ret
InternalSyncCompareExchange64 ENDP
END

53
MdePkg/Library/BaseLib/X64/InterlockedCompareExchange64.c
View File

@ -1,53 +0,0 @@
/** @file
InterlockedCompareExchange64 function
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
/**
Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
**/
__int64 _InterlockedCompareExchange64(
__int64 volatile * Destination,
__int64 Exchange,
__int64 Comperand
);
#pragma intrinsic(_InterlockedCompareExchange64)
/**
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.
@param Value A pointer to the 64-bit value for the compare exchange
operation.
@param CompareValue 64-bit value used in compare operation.
@param ExchangeValue 64-bit value used in exchange operation.
@return The original *Value before exchange.
**/
UINT64
EFIAPI
InternalSyncCompareExchange64 (
IN UINT64 *Value,
IN UINT64 CompareValue,
IN UINT64 ExchangeValue
)
{
return _InterlockedCompareExchange64 (Value, ExchangeValue, CompareValue);
}

36
MdePkg/Library/BaseLib/X64/InterlockedDecrement.S
View File

@ -1,36 +0,0 @@
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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:
#
# InterlockedDecrement.S
#
# Abstract:
#
# InterlockedDecrement function
#
# Notes:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# InterlockedDecrement (
# IN UINT32 *Value
# );
#------------------------------------------------------------------------------
.global ASM_PFX(InternalSyncDecrement)
ASM_PFX(InternalSyncDecrement):
lock decl (%rcx)
mov (%rcx), %eax
ret

39
MdePkg/Library/BaseLib/X64/InterlockedDecrement.asm
View File

@ -1,39 +0,0 @@
;------------------------------------------------------------------------------
;
; 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.
;
; Module Name:
;
; InterlockedDecrement.Asm
;
; Abstract:
;
; InterlockedDecrement function
;
; Notes:
;
;------------------------------------------------------------------------------
.code
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; InterlockedDecrement (
; IN UINT32 *Value
; );
;------------------------------------------------------------------------------
InternalSyncDecrement PROC
lock dec dword ptr [rcx]
mov eax, [rcx]
ret
InternalSyncDecrement ENDP
END

46
MdePkg/Library/BaseLib/X64/InterlockedDecrement.c
View File

@ -1,46 +0,0 @@
/** @file
InterlockedDecrement function
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
/**
Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
**/
long _InterlockedDecrement(
long * lpAddend
);
#pragma intrinsic(_InterlockedDecrement)
/**
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.
@param Value A pointer to the 32-bit value to decrement.
@return The decrement value.
**/
UINT32
EFIAPI
InternalSyncDecrement (
IN UINT32 *Value
)
{
return _InterlockedDecrement (Value);
}

36
MdePkg/Library/BaseLib/X64/InterlockedIncrement.S
View File

@ -1,36 +0,0 @@
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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:
#
# InterlockedIncrement.S
#
# Abstract:
#
# InterlockedIncrement function
#
# Notes:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# InterlockedIncrement (
# IN UINT32 *Value
# );
#------------------------------------------------------------------------------
.global ASM_PFX(InternalSyncIncrement)
ASM_PFX(InternalSyncIncrement):
lock incl (%rcx)
mov (%rcx), %eax
ret

39
MdePkg/Library/BaseLib/X64/InterlockedIncrement.asm
View File

@ -1,39 +0,0 @@
;------------------------------------------------------------------------------
;
; 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.
;
; Module Name:
;
; InterlockedIncrement.Asm
;
; Abstract:
;
; InterlockedIncrement function
;
; Notes:
;
;------------------------------------------------------------------------------
.code
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; InterlockedIncrement (
; IN UINT32 *Value
; );
;------------------------------------------------------------------------------
InternalSyncIncrement PROC
lock inc dword ptr [rcx]
mov eax, [rcx]
ret
InternalSyncIncrement ENDP
END

46
MdePkg/Library/BaseLib/X64/InterlockedIncrement.c
View File

@ -1,46 +0,0 @@
/** @file
InterLockedIncrement function
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
/**
Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
**/
long _InterlockedIncrement(
long * lpAddend
);
#pragma intrinsic(_InterlockedIncrement)
/**
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.
@param Value A pointer to the 32-bit value to increment.
@return The incremented value.
**/
UINT32
EFIAPI
InternalSyncIncrement (
IN UINT32 *Value
)
{
return _InterlockedIncrement (Value);
}