diff options
Diffstat (limited to 'src/corelib/arch/symbian/qatomic_generic_armv6.cpp')
| -rw-r--r-- | src/corelib/arch/symbian/qatomic_generic_armv6.cpp | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/src/corelib/arch/symbian/qatomic_generic_armv6.cpp b/src/corelib/arch/symbian/qatomic_generic_armv6.cpp new file mode 100644 index 0000000000..f9ce6fd154 --- /dev/null +++ b/src/corelib/arch/symbian/qatomic_generic_armv6.cpp @@ -0,0 +1,472 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +** This file implements the generic atomics interface using ARMv6 assembly +** instructions. It is more efficient than the inline versions when Qt is +** built for the THUMB instruction set, as the required instructions are +** only available in ARM state. +****************************************************************************/ + +#include <QtCore/qglobal.h> + +#ifdef QT_HAVE_ARMV6 +#ifndef SYMBIAN_E32_ATOMIC_API + +QT_BEGIN_NAMESPACE + +QT_USE_NAMESPACE + +#ifdef Q_CC_RVCT +#pragma push +#pragma arm +Q_CORE_EXPORT asm +bool QBasicAtomicInt_testAndSetRelaxed(volatile int *_q_value, int expectedValue, int newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +bool QBasicAtomicInt_testAndSetAcquire(volatile int *_q_value, int expectedValue, int newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +bool QBasicAtomicInt_testAndSetRelease(volatile int *_q_value, int expectedValue, int newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +bool QBasicAtomicInt_testAndSetOrdered(volatile int *_q_value, int expectedValue, int newValue) +{ + CODE32 + //R0 = _q_value + //R1 = expectedValue + //R2 = newValue +retry_testAndSetOrdered + LDREX r3,[r0] //r3 = *_q_value + EORS r3,r3,r1 //if (r3 == expectedValue) { + STREXEQ r3,r2,[r0] //*_q_value = newvalue, r3 = error + TEQEQ r3,#1 //if error + BEQ retry_testAndSetOrdered //then goto retry } + RSBS r0,r3,#1 //return (r3 == 0) + MOVCC r0,#0 + BX r14 +} + +Q_CORE_EXPORT asm +int QBasicAtomicInt_fetchAndStoreRelaxed(volatile int *_q_value, int newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +int QBasicAtomicInt_fetchAndStoreAcquire(volatile int *_q_value, int newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +int QBasicAtomicInt_fetchAndStoreRelease(volatile int *_q_value, int newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +int QBasicAtomicInt_fetchAndStoreOrdered(volatile int *_q_value, int newValue) +{ + CODE32 +//R0 = _q_value +//R1 = newValue +retry_fetchAndStoreOrdered + LDREX r3,[r0] //r3 = *_q_value + STREX r2,r1,[r0] //*_q_value = newValue, r2 = error + TEQ r2,#0 //if error + BNE retry_fetchAndStoreOrdered //then goto retry + MOV r0,r3 //return r3 + BX r14 +} + +Q_CORE_EXPORT asm +int QBasicAtomicInt_fetchAndAddRelaxed(volatile int *_q_value, int valueToAdd) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +int QBasicAtomicInt_fetchAndAddAcquire(volatile int *_q_value, int valueToAdd) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +int QBasicAtomicInt_fetchAndAddRelease(volatile int *_q_value, int valueToAdd) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +int QBasicAtomicInt_fetchAndAddOrdered(volatile int *_q_value, int valueToAdd) +{ + CODE32 + //R0 = _q_value + //R1 = valueToAdd + STMDB sp!,{r12,lr} +retry_fetchAndAddOrdered + LDREX r2,[r0] //r2 = *_q_value + ADD r3,r2,r1 //r3 = r2 + r1 + STREX r12,r3,[r0] //*_q_value = r3, r12 = error + TEQ r12,#0 //if error + BNE retry_fetchAndAddOrdered //then retry + MOV r0,r2 //return r2 + LDMIA sp!,{r12,pc} +} + +Q_CORE_EXPORT asm +bool QBasicAtomicPointer_testAndSetRelaxed(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +bool QBasicAtomicPointer_testAndSetRelease(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +bool QBasicAtomicPointer_testAndSetAcquire(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +bool QBasicAtomicPointer_testAndSetOrdered(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + CODE32 + //R0 = _q_value + //R1 = expectedValue + //R2 = newValue +retryPointer_testAndSetOrdered + LDREX r3,[r0] //r3 = *_q_value + EORS r3,r3,r1 //if (r3 == expectedValue) { + STREXEQ r3,r2,[r0] //*_q_value = newvalue, r3 = error + TEQEQ r3,#1 //if error + BEQ retryPointer_testAndSetOrdered //then goto retry } + RSBS r0,r3,#1 //return (r3 == 0) + MOVCC r0,#0 + BX r14 +} + +Q_CORE_EXPORT asm +void *QBasicAtomicPointer_fetchAndStoreRelaxed(void * volatile *_q_value, void *newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +void *QBasicAtomicPointer_fetchAndStoreAcquire(void * volatile *_q_value, void *newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +void *QBasicAtomicPointer_fetchAndStoreRelease(void * volatile *_q_value, void *newValue) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +void *QBasicAtomicPointer_fetchAndStoreOrdered(void * volatile *_q_value, void *newValue) +{ + CODE32 + //R0 = _q_value + //R1 = newValue +retryPointer_fetchAndStoreOrdered + LDREX r3,[r0] //r3 = *_q_value + STREX r2,r1,[r0] //*_q_value = newValue, r2 = error + TEQ r2,#0 //if error + BNE retryPointer_fetchAndStoreOrdered //then goto retry + MOV r0,r3 //return r3 + BX r14 +} + +Q_CORE_EXPORT asm +void *QBasicAtomicPointer_fetchAndAddRelaxed(void * volatile *_q_value, qptrdiff valueToAdd) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +void *QBasicAtomicPointer_fetchAndAddRelease(void * volatile *_q_value, qptrdiff valueToAdd) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +void *QBasicAtomicPointer_fetchAndAddAcquire(void * volatile *_q_value, qptrdiff valueToAdd) +{ + CODE32 + //fall through +} +Q_CORE_EXPORT asm +void *QBasicAtomicPointer_fetchAndAddOrdered(void * volatile *_q_value, qptrdiff valueToAdd) +{ + CODE32 + //R0 = _q_value + //R1 = valueToAdd + STMDB sp!,{r12,lr} +retryPointer_fetchAndAddOrdered + LDREX r2,[r0] //r2 = *_q_value + ADD r3,r2,r1 //r3 = r2 + r1 + STREX r12,r3,[r0] //*_q_value = r3, r12 = error + TEQ r12,#0 //if error + BNE retryPointer_fetchAndAddOrdered //then retry + MOV r0,r2 //return r2 + LDMIA sp!,{r12,pc} +} + +#pragma pop +#elif defined (Q_CC_GCCE) +Q_CORE_EXPORT __declspec( naked ) +bool QBasicAtomicInt_testAndSetRelaxed(volatile int *_q_value, int expectedValue, int newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +bool QBasicAtomicInt_testAndSetAcquire(volatile int *_q_value, int expectedValue, int newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +bool QBasicAtomicInt_testAndSetRelease(volatile int *_q_value, int expectedValue, int newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +bool QBasicAtomicInt_testAndSetOrdered(volatile int *_q_value, int expectedValue, int newValue) +{ + //R0 = _q_value + //R1 = expectedValue + //R2 = newValue + asm("retry_testAndSetOrdered:"); + asm(" LDREX r3,[r0]"); //r3 = *_q_value + asm(" EORS r3,r3,r1"); //if (r3 == expectedValue) { + asm(" STREXEQ r3,r2,[r0]"); //*_q_value = newvalue, r3 = error + asm(" TEQEQ r3,#1"); //if error + asm(" BEQ retry_testAndSetOrdered"); //then goto retry } + asm(" RSBS r0,r3,#1"); //return (r3 == 0) + asm(" MOVCC r0,#0"); + asm(" BX r14"); +} + +Q_CORE_EXPORT __declspec( naked ) +int QBasicAtomicInt_fetchAndStoreRelaxed(volatile int *_q_value, int newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +int QBasicAtomicInt_fetchAndStoreAcquire(volatile int *_q_value, int newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +int QBasicAtomicInt_fetchAndStoreRelease(volatile int *_q_value, int newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +int QBasicAtomicInt_fetchAndStoreOrdered(volatile int *_q_value, int newValue) +{ +//R0 = _q_value +//R1 = newValue + asm("retry_fetchAndStoreOrdered:"); + asm(" LDREX r3,[r0]"); //r3 = *_q_value + asm(" STREX r2,r1,[r0]"); //*_q_value = newValue, r2 = error + asm(" TEQ r2,#0"); //if error + asm(" BNE retry_fetchAndStoreOrdered"); //then goto retry + asm(" MOV r0,r3"); //return r3 + asm(" BX r14"); +} + +Q_CORE_EXPORT __declspec( naked ) +int QBasicAtomicInt_fetchAndAddRelaxed(volatile int *_q_value, int valueToAdd) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +int QBasicAtomicInt_fetchAndAddAcquire(volatile int *_q_value, int valueToAdd) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +int QBasicAtomicInt_fetchAndAddRelease(volatile int *_q_value, int valueToAdd) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +int QBasicAtomicInt_fetchAndAddOrdered(volatile int *_q_value, int valueToAdd) +{ + //R0 = _q_value + //R1 = valueToAdd + asm(" STMDB sp!,{r12,lr}"); + asm("retry_fetchAndAddOrdered:"); + asm(" LDREX r2,[r0]"); //r2 = *_q_value + asm(" ADD r3,r2,r1 "); //r3 = r2 + r1 + asm(" STREX r12,r3,[r0]"); //*_q_value = r3, r12 = error + asm(" TEQ r12,#0"); //if error + asm(" BNE retry_fetchAndAddOrdered"); //then retry + asm(" MOV r0,r2"); //return r2 + asm(" LDMIA sp!,{r12,pc}"); +} + +Q_CORE_EXPORT __declspec( naked ) +bool QBasicAtomicPointer_testAndSetRelaxed(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +bool QBasicAtomicPointer_testAndSetRelease(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +bool QBasicAtomicPointer_testAndSetAcquire(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +bool QBasicAtomicPointer_testAndSetOrdered(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + //R0 = _q_value + //R1 = expectedValue + //R2 = newValue + asm("retryPointer_testAndSetOrdered:"); + asm(" LDREX r3,[r0]"); //r3 = *_q_value + asm(" EORS r3,r3,r1"); //if (r3 == expectedValue) { + asm(" STREXEQ r3,r2,[r0]"); //*_q_value = newvalue, r3 = error + asm(" TEQEQ r3,#1"); //if error + asm(" BEQ retryPointer_testAndSetOrdered"); //then goto retry } + asm(" RSBS r0,r3,#1"); //return (r3 == 0) + asm(" MOVCC r0,#0"); + asm(" BX r14"); +} + +Q_CORE_EXPORT __declspec( naked ) +void *QBasicAtomicPointer_fetchAndStoreRelaxed(void * volatile *_q_value, void *newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +void *QBasicAtomicPointer_fetchAndStoreAcquire(void * volatile *_q_value, void *newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +void *QBasicAtomicPointer_fetchAndStoreRelease(void * volatile *_q_value, void *newValue) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +void *QBasicAtomicPointer_fetchAndStoreOrdered(void * volatile *_q_value, void *newValue) +{ + //R0 = _q_value + //R1 = newValue + asm("retryPointer_fetchAndStoreOrdered:"); + asm(" LDREX r3,[r0]"); //r3 = *_q_value + asm(" STREX r2,r1,[r0]"); //*_q_value = newValue, r2 = error + asm(" TEQ r2,#0"); //if error + asm(" BNE retryPointer_fetchAndStoreOrdered"); //then goto retry + asm(" MOV r0,r3"); //return r3 + asm(" BX r14"); +} + +Q_CORE_EXPORT __declspec( naked ) +void *QBasicAtomicPointer_fetchAndAddRelaxed(void * volatile *_q_value, qptrdiff valueToAdd) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +void *QBasicAtomicPointer_fetchAndAddRelease(void * volatile *_q_value, qptrdiff valueToAdd) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +void *QBasicAtomicPointer_fetchAndAddAcquire(void * volatile *_q_value, qptrdiff valueToAdd) +{ + //fall through +} +Q_CORE_EXPORT __declspec( naked ) +void *QBasicAtomicPointer_fetchAndAddOrdered(void * volatile *_q_value, qptrdiff valueToAdd) +{ + //R0 = _q_value + //R1 = valueToAdd + asm(" STMDB sp!,{r12,lr}"); + asm("retryPointer_fetchAndAddOrdered:"); + asm(" LDREX r2,[r0]"); //r2 = *_q_value + asm(" ADD r3,r2,r1"); //r3 = r2 + r1 + asm(" STREX r12,r3,[r0]"); //*_q_value = r3, r12 = error + asm(" TEQ r12,#0"); //if error + asm(" BNE retryPointer_fetchAndAddOrdered"); //then retry + asm(" MOV r0,r2"); //return r2 + asm(" LDMIA sp!,{r12,pc}"); +} +#else +#error unknown arm compiler +#endif +QT_END_NAMESPACE +#endif +#endif |