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# qatomic_bfin.h

Go to the documentation of this file.

    00001 /****************************************************************************
    00002 **
    00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
    00004 ** All rights reserved.
    00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
    00006 **
    00007 ** This file is part of the QtCore module of the Qt Toolkit.
    00008 **
    00009 ** $QT_BEGIN_LICENSE:LGPL$
    00010 ** Commercial Usage
    00011 ** Licensees holding valid Qt Commercial licenses may use this file in
    00012 ** accordance with the Qt Commercial License Agreement provided with the
    00013 ** Software or, alternatively, in accordance with the terms contained in
    00014 ** a written agreement between you and Nokia.
    00015 **
    00016 ** GNU Lesser General Public License Usage
    00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
    00018 ** General Public License version 2.1 as published by the Free Software
    00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
    00020 ** packaging of this file.  Please review the following information to
    00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00023 **
    00024 ** In addition, as a special exception, Nokia gives you certain additional
    00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
    00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
    00027 **
    00028 ** GNU General Public License Usage
    00029 ** Alternatively, this file may be used under the terms of the GNU
    00030 ** General Public License version 3.0 as published by the Free Software
    00031 ** Foundation and appearing in the file LICENSE.GPL included in the
    00032 ** packaging of this file.  Please review the following information to
    00033 ** ensure the GNU General Public License version 3.0 requirements will be
    00034 ** met: http://www.gnu.org/copyleft/gpl.html.
    00035 **
    00036 ** If you have questions regarding the use of this file, please contact
    00037 ** Nokia at qt-info@nokia.com.
    00038 ** $QT_END_LICENSE$
    00039 **
    00040 ****************************************************************************/
    00041
    00042 #ifndef QATOMIC_BFIN_H
    00043 #define QATOMIC_BFIN_H
    00044
    00045 QT_BEGIN_HEADER
    00046
    00047 QT_BEGIN_NAMESPACE
    00048
    00049 #define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE
    00050
    00051 inline bool QBasicAtomicInt::isReferenceCountingNative()
    00052 { return false; }
    00053 inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
    00054 { return false; }
    00055
    00056 #define Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE
    00057
    00058 inline bool QBasicAtomicInt::isTestAndSetNative()
    00059 { return false; }
    00060 inline bool QBasicAtomicInt::isTestAndSetWaitFree()
    00061 { return false; }
    00062
    00063 #define Q_ATOMIC_INT_FETCH_AND_STORE_IS_NOT_NATIVE
    00064
    00065 inline bool QBasicAtomicInt::isFetchAndStoreNative()
    00066 { return false; }
    00067 inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
    00068 { return false; }
    00069
    00070 #define Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE
    00071
    00072 inline bool QBasicAtomicInt::isFetchAndAddNative()
    00073 { return false; }
    00074 inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
    00075 { return false; }
    00076
    00077 #define Q_ATOMIC_POINTER_TEST_AND_SET_IS_NOT_NATIVE
    00078
    00079 template <typename T>
    00080 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
    00081 { return false; }
    00082 template <typename T>
    00083 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
    00084 { return false; }
    00085
    00086 #define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_NOT_NATIVE
    00087
    00088 template <typename T>
    00089 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
    00090 { return false; }
    00091 template <typename T>
    00092 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
    00093 { return false; }
    00094
    00095 #define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NOT_NATIVE
    00096
    00097 template <typename T>
    00098 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
    00099 { return false; }
    00100 template <typename T>
    00101 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
    00102 { return false; }
    00103
    00104 #if defined(Q_OS_LINUX) && defined(Q_CC_GNU)
    00105
    00106 QT_BEGIN_INCLUDE_NAMESPACE
    00107 #include <asm/fixed_code.h>
    00108 QT_END_INCLUDE_NAMESPACE
    00109
    00110 inline bool QBasicAtomicInt::ref()
    00111 {
    00112     int ret;
    00113     asm volatile("R0 = 1;\n\t"
    00114          "P0 = %3;\n\t"
    00115                  "CALL (%2);\n\t"
    00116                  "%0 = R0;"
    00117                  : "=da" (ret), "=m" (_q_value)
    00118                  : "a" (ATOMIC_ADD32), "da" (&_q_value), "m" (_q_value)
    00119                  : "R0", "R1", "P0", "RETS", "memory");
    00120     return ret != 0;
    00121 }
    00122
    00123 inline bool QBasicAtomicInt::deref()
    00124 {
    00125     int ret;
    00126     asm volatile("R0 = 1;\n\t"
    00127          "P0 = %3;\n\t"
    00128                  "CALL (%2);\n\t"
    00129                  "%0 = R0;"
    00130                  : "=da" (ret), "=m" (_q_value)
    00131                  : "a" (ATOMIC_SUB32), "da" (&_q_value), "m" (_q_value)
    00132                  : "R0", "R1", "P0", "RETS", "memory");
    00133     return ret != 0;
    00134 }
    00135
    00136 inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
    00137 {
    00138     long int readval;
    00139     asm volatile ("P0 = %2;\n\t"
    00140           "R1 = %3;\n\t"
    00141           "R2 = %4;\n\t"
    00142           "CALL (%5);\n\t"
    00143           "%0 = R0;\n\t"
    00144           : "=da" (readval), "=m" (_q_value)
    00145           : "da" (&_q_value),
    00146           "da" (expectedValue),
    00147           "da" (newValue),
    00148           "a" (ATOMIC_CAS32),
    00149           "m" (_q_value)
    00150           : "P0", "R0", "R1", "R2", "RETS", "memory", "cc");
    00151     return readval == expectedValue;
    00152 }
    00153
    00154 inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
    00155 {
    00156     asm volatile("R1 = %2;\n\t"
    00157          "P0 = %4;\n\t"
    00158                  "CALL (%3);\n\t"
    00159                  "%0 = R0;"
    00160                  : "=da" (newValue), "=m" (_q_value)
    00161                  : "da" (newValue), "a" (ATOMIC_XCHG32), "da" (&_q_value), "m" (_q_value)
    00162                  : "R0", "R1", "P0", "RETS", "memory");
    00163     return newValue;
    00164 }
    00165
    00166 inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
    00167 {
    00168     int ret;
    00169     asm volatile("R0 = %[val];\n\t"
    00170          "P0 = %[qvalp];\n\t"
    00171                  "CALL (%[addr]);\n\t"
    00172                  "%[ret] = R1;"
    00173                  : [ret] "=da" (ret), "=m" (_q_value)
    00174                  : [addr] "a" (ATOMIC_ADD32), [qvalp] "da" (&_q_value), "m" (_q_value), [val] "da" (valueToAdd)
    00175                  : "R0", "R1", "P0", "RETS", "memory");
    00176     return ret;
    00177 }
    00178
    00179 template <typename T>
    00180 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
    00181 {
    00182     T *readval;
    00183     asm volatile ("P0 = %2;\n\t"
    00184           "R1 = %3;\n\t"
    00185           "R2 = %4;\n\t"
    00186           "CALL (%5);\n\t"
    00187           "%0 = R0;\n\t"
    00188           : "=da" (readval), "=m" (_q_value)
    00189           : "da" (&_q_value),
    00190           "da" (expectedValue),
    00191           "da" (newValue),
    00192           "a" (ATOMIC_CAS32),
    00193           "m" (_q_value)
    00194           : "P0", "R0", "R1", "R2", "RETS", "memory", "cc");
    00195     return readval == expectedValue;
    00196 }
    00197
    00198 template <typename T>
    00199 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue)
    00200 {
    00201     asm volatile("R1 = %2;\n\t"
    00202          "P0 = %4;\n\t"
    00203                  "CALL (%3);\n\t"
    00204                  "%0 = R0;"
    00205                  : "=da" (newValue), "=m" (_q_value)
    00206                  : "da" (newValue), "a" (ATOMIC_XCHG32), "da" (&_q_value), "m" (_q_value)
    00207                  : "R0", "R1", "P0", "RETS", "memory");
    00208     return newValue;
    00209 }
    00210
    00211 template <typename T>
    00212 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd)
    00213 {
    00214     T* ret;
    00215     asm volatile("R0 = %[val];\n\t"
    00216          "P0 = %[qvalp];\n\t"
    00217                  "CALL (%[addr]);\n\t"
    00218                  "%[ret] = R1;"
    00219                  : [ret] "=da" (ret), "=m" (_q_value)
    00220                  : [addr] "a" (ATOMIC_ADD32), [qvalp] "da" (&_q_value), "m" (_q_value), [val] "da" (valueToAdd * sizeof(T))
    00221                  : "R0", "R1", "P0", "RETS", "memory");
    00222     return ret;
    00223 }
    00224
    00225
    00226 #endif // Q_OS_LINUX && Q_CC_GNU
    00227
    00228 // Test and set for integers
    00229
    00230 inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
    00231 {
    00232     return testAndSetOrdered(expectedValue, newValue);
    00233 }
    00234
    00235 inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
    00236 {
    00237     return testAndSetOrdered(expectedValue, newValue);
    00238 }
    00239
    00240 inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
    00241 {
    00242     return testAndSetOrdered(expectedValue, newValue);
    00243 }
    00244
    00245 // Fetch and store for integers
    00246
    00247 inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
    00248 {
    00249     return fetchAndStoreOrdered(newValue);
    00250 }
    00251
    00252 inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
    00253 {
    00254     return fetchAndStoreOrdered(newValue);
    00255 }
    00256
    00257 inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
    00258 {
    00259     return fetchAndStoreOrdered(newValue);
    00260 }
    00261
    00262 // Fetch and add for integers
    00263
    00264 inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
    00265 {
    00266     return fetchAndAddOrdered(valueToAdd);
    00267 }
    00268
    00269 inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
    00270 {
    00271     return fetchAndAddOrdered(valueToAdd);
    00272 }
    00273
    00274 inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
    00275 {
    00276     return fetchAndAddOrdered(valueToAdd);
    00277 }
    00278
    00279 // Test and set for pointers
    00280
    00281 template <typename T>
    00282 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
    00283 {
    00284     return testAndSetOrdered(expectedValue, newValue);
    00285 }
    00286
    00287 template <typename T>
    00288 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
    00289 {
    00290     return testAndSetOrdered(expectedValue, newValue);
    00291 }
    00292
    00293 template <typename T>
    00294 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
    00295 {
    00296     return testAndSetOrdered(expectedValue, newValue);
    00297 }
    00298
    00299 // Fetch and store for pointers
    00300
    00301 template <typename T>
    00302 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
    00303 {
    00304     return fetchAndStoreOrdered(newValue);
    00305 }
    00306
    00307 template <typename T>
    00308 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
    00309 {
    00310     return fetchAndStoreOrdered(newValue);
    00311 }
    00312
    00313 template <typename T>
    00314 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
    00315 {
    00316     return fetchAndStoreOrdered(newValue);
    00317 }
    00318
    00319 // Fetch and add for pointers
    00320
    00321 template <typename T>
    00322 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd)
    00323 {
    00324     return fetchAndAddOrdered(valueToAdd);
    00325 }
    00326
    00327 template <typename T>
    00328 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd)
    00329 {
    00330     return fetchAndAddOrdered(valueToAdd);
    00331 }
    00332
    00333 template <typename T>
    00334 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
    00335 {
    00336     return fetchAndAddOrdered(valueToAdd);
    00337 }
    00338
    00339 QT_END_NAMESPACE
    00340
    00341 QT_END_HEADER
    00342
    00343 #endif // QATOMIC_BFIN_H