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qatomic_avr32.h：源码内容
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#ifndef QATOMIC_AVR32_H
#define QATOMIC_AVR32_H
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE
inline bool QBasicAtomicInt::isReferenceCountingNative()
{ return true; }
inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
{ return false; }
#define Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE
inline bool QBasicAtomicInt::isTestAndSetNative()
{ return true; }
inline bool QBasicAtomicInt::isTestAndSetWaitFree()
{ return false; }
#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE
#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_WAIT_FREE
inline bool QBasicAtomicInt::isFetchAndStoreNative()
{ return true; }
inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
{ return true; }
#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE
inline bool QBasicAtomicInt::isFetchAndAddNative()
{ return true; }
inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
{ return false; }
#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
{ return true; }
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
{ return false; }
#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE
#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_WAIT_FREE
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
{ return true; }
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
{ return true; }
#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_ALWAYS_NATIVE
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
{ return true; }
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
{ return false; }
#if defined(QT_BUILD_QREGION_CPP)
#warning "workaround!"
__attribute__((noinline))
#else
inline
#endif
bool QBasicAtomicInt::ref()
{
    register int newValue;
    asm volatile("0:n"
                 "ssrf %[LOCK]n"
                 "ld.w %[newValue], %[_q_value]n"
                 "add %[newValue], %[ONE]n"
                 "stcond %[_q_value], %[newValue]n"
                 "brne 0bn"
                 : [newValue] "=&r"(newValue),
                   [_q_value] "+RKs16"(_q_value)
                 : [LOCK] "i"(0x5),
                   [ONE] "r"(1)
                 : "cc", "memory");
    return newValue;
}
inline bool QBasicAtomicInt::deref()
{
    register int newValue;
    asm volatile("0:n"
                 "ssrf %[LOCK]n"
                 "ld.w %[newValue], %[_q_value]n"
                 "sub %[newValue], %[ONE]n"
                 "stcond %[_q_value], %[newValue]n"
                 "brne 0bn"
                 : [newValue] "=&r"(newValue),
                   [_q_value] "+RKs16"(_q_value)
                 : [LOCK] "i"(0x5),
                   [ONE] "i"(1)
                 : "cc", "memory");
    return newValue;
}
inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
{
    register int originalValue;
    asm volatile("0:n"
                 "ssrf %[LOCK]n"
                 "ld.w %[originalValue], %[_q_value]n"
                 "cp.w %[originalValue], %[expectedValue]n"
                 "brne 0fn"
                 "stcond %[_q_value], %[newValue]n"
                 "brne 0bn"
                 "0:n"
                 : [originalValue] "=&r"(originalValue),
                   [_q_value] "+RKs16"(_q_value)
                 : [LOCK] "i"(0x5),
                   [expectedValue] "r"(expectedValue),
                   [newValue] "r"(newValue)
                 : "cc", "memory");
    return originalValue == expectedValue;
}
inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
{
    return testAndSetOrdered(expectedValue, newValue);
}
inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
{
    return testAndSetOrdered(expectedValue, newValue);
}
inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
{
    return testAndSetOrdered(expectedValue, newValue);
}
inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
{
    register int originalValue;
    asm volatile("xchg %[originalValue], %[_q_value], %[newValue]"
                 : [originalValue] "=&r"(originalValue),
                   "+m" (_q_value)
                 : [_q_value] "r"(&_q_value),
                   [newValue] "r"(newValue)
                 : "cc", "memory");
    return originalValue;
}
inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
{
    return fetchAndStoreOrdered(newValue);
}
inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
{
    return fetchAndStoreOrdered(newValue);
}
inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
{
    return fetchAndStoreOrdered(newValue);
}
inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
{
    register int originalValue, newValue;
    asm volatile("0:n"
                 "ssrf %[LOCK]n"
                 "ld.w %[originalValue], %[_q_value]n"
                 "add %[newValue], %[originalValue], %[valueToAdd]n"
                 "stcond %[_q_value], %[newValue]n"
                 "brne 0bn"
                 : [originalValue] "=&r"(originalValue),
                   [newValue] "=&r"(newValue),
                   [_q_value] "+RKs16"(_q_value)
                 : [LOCK] "i"(0x5),
                   [valueToAdd] "r"(valueToAdd)
                 : "cc", "memory");
    return originalValue;
}
inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
{
    return fetchAndAddOrdered(valueToAdd);
}
inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
{
    return fetchAndAddOrdered(valueToAdd);
}
inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
{
    return fetchAndAddOrdered(valueToAdd);
}
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
{
    register T *originalValue;
    asm volatile("0:n"
                 "ssrf %[LOCK]n"
                 "ld.w %[originalValue], %[_q_value]n"
                 "cp.w %[originalValue], %[expectedValue]n"
                 "brne 0fn"
                 "stcond %[_q_value], %[newValue]n"
                 "brne 0bn"
                 "0:n"
                 : [originalValue] "=&r"(originalValue),
                   [_q_value] "+RKs16"(_q_value)
                 : [LOCK] "i"(0x5),
                   [expectedValue] "r"(expectedValue),
                   [newValue] "r"(newValue)
                 : "cc", "memory");
    return originalValue == expectedValue;
}
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
{
    return testAndSetOrdered(expectedValue, newValue);
}
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
{
    return testAndSetOrdered(expectedValue, newValue);
}
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
{
    return testAndSetOrdered(expectedValue, newValue);
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue)
{
    register T *originalValue;
    asm volatile("xchg %[originalValue], %[_q_value], %[newValue]"
                 : [originalValue] "=&r"(originalValue),
                   "+m" (_q_value)
                 : [_q_value] "r"(&_q_value),
                   [newValue] "r"(newValue)
                 : "cc", "memory");
    return originalValue;
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
{
    return fetchAndStoreOrdered(newValue);
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
{
    return fetchAndStoreOrdered(newValue);
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
{
    return fetchAndStoreOrdered(newValue);
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd)
{
    register T *originalValue, *newValue;
    asm volatile("0:n"
                 "ssrf %[LOCK]n"
                 "ld.w %[originalValue], %[_q_value]n"
                 "add %[newValue], %[originalValue], %[valueToAdd]n"
                 "stcond %[_q_value], %[newValue]n"
                 "brne 0bn"
                 : [originalValue] "=&r"(originalValue),
                   [newValue] "=&r"(newValue),
                   [_q_value] "+RKs16"(_q_value)
                 : [LOCK] "i"(0x5),
                   [valueToAdd] "r"(valueToAdd * sizeof(T))
                 : "cc", "memory");
    return originalValue;
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd)
{
    return fetchAndAddOrdered(valueToAdd);
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd)
{
    return fetchAndAddOrdered(valueToAdd);
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
{
    return fetchAndAddOrdered(valueToAdd);
}
QT_END_NAMESPACE
QT_END_HEADER
#endif // QATOMIC_AVR32_H

						