/******************************************************************************** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.**** This file is part of the QtCore module of the Qt Toolkit.**** This file may be used under the terms of the GNU General Public** License version 2.0 as published by the Free Software Foundation** and appearing in the file LICENSE.GPL included in the packaging of** this file.  Please review the following information to ensure GNU** General Public Licensing requirements will be met:** http://www.trolltech.com/products/qt/opensource.html**** If you are unsure which license is appropriate for your use, please** review the following information:** http://www.trolltech.com/products/qt/licensing.html or contact the** sales department at sales@trolltech.com.**** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#ifndef POWERPC_QATOMIC_H#define POWERPC_QATOMIC_H#include <QtCore/qglobal.h>QT_BEGIN_HEADER#if defined(Q_CC_GNU)#ifdef __64BIT__#  define LPARX "ldarx"#  define CMPP  "cmpd"#  define STPCX "stdcx."#else#  define LPARX "lwarx"#  define CMPP  "cmpw"#  define STPCX "stwcx."#endifinline int q_atomic_test_and_set_int(volatile int *ptr, int expected, int newval){    register int tmp;    register int ret;    asm volatile("lwarx  %0,0,%2\n"                 "cmpw   %0,%3\n"                 "bne-   $+20\n"                 "stwcx. %4,0,%2\n"                 "bne-   $-16\n"                 "li     %1,1\n"                 "b      $+8\n"                 "li     %1,0\n"                 : "=&r" (tmp), "=&r" (ret)                 : "r" (ptr), "r" (expected), "r" (newval)                 : "cc", "memory");    return ret;}inline int q_atomic_test_and_set_acquire_int(volatile int *ptr, int expected, int newval){    register int tmp;    register int ret;    asm volatile("lwarx  %0,0,%2\n"                 "cmpw   %0,%3\n"                 "bne-   $+20\n"                 "stwcx. %4,0,%2\n"                 "bne-   $-16\n"                 "li     %1,1\n"                 "b      $+8\n"                 "li     %1,0\n"                 "eieio\n"                 : "=&r" (tmp), "=&r" (ret)                 : "r" (ptr), "r" (expected), "r" (newval)                 : "cc", "memory");    return ret;}inline int q_atomic_test_and_set_release_int(volatile int *ptr, int expected, int newval){    register int tmp;    register int ret;    asm volatile("eieio\n"                 "lwarx  %0,0,%2\n"                 "cmpw   %0,%3\n"                 "bne-   $+20\n"                 "stwcx. %4,0,%2\n"                 "bne-   $-16\n"                 "li     %1,1\n"                 "b      $+8\n"                 "li     %1,0\n"                 : "=&r" (tmp), "=&r" (ret)                 : "r" (ptr), "r" (expected), "r" (newval)                 : "cc", "memory");    return ret;}inline int q_atomic_test_and_set_ptr(volatile void *ptr, void *expected, void *newval){    register void *tmp;    register int ret;    asm volatile(LPARX"  %0,0,%2\n"                 CMPP"   %0,%3\n"                 "bne-   $+20\n"                 STPCX"  %4,0,%2\n"                 "bne-   $-16\n"                 "li     %1,1\n"                 "b      $+8\n"                 "li     %1,0\n"                 : "=&r" (tmp), "=&r" (ret)                 : "r" (ptr), "r" (expected), "r" (newval)                 : "cc", "memory");    return ret;}inline int q_atomic_increment(volatile int *ptr){    register int ret;    register int one = 1;    asm volatile("lwarx  %0, 0, %1\n"                 "add    %0, %2, %0\n"                 "stwcx. %0, 0, %1\n"                 "bne-   $-12\n"                 : "=&r" (ret)                 : "r" (ptr), "r" (one)                 : "cc", "memory");    return ret;}inline int q_atomic_decrement(volatile int *ptr){    register int ret;    register int one = -1;    asm volatile("lwarx  %0, 0, %1\n"                 "add    %0, %2, %0\n"                 "stwcx. %0, 0, %1\n"                 "bne-   $-12\n"                 : "=&r" (ret)                 : "r" (ptr), "r" (one)                 : "cc", "memory");    return ret;}inline int q_atomic_set_int(volatile int *ptr, int newval){    register int ret;    asm volatile("lwarx  %0, 0, %1\n"                 "stwcx. %2, 0, %1\n"                 "bne-   $-8\n"                 : "=&r" (ret)                 : "r" (ptr), "r" (newval)                 : "cc", "memory");    return ret;}inline void *q_atomic_set_ptr(volatile void *ptr, void *newval){    register void *ret;    asm volatile(LPARX"  %0, 0, %1\n"                 STPCX"  %2, 0, %1\n"                 "bne-   $-8\n"                 : "=&r" (ret)                 : "r" (ptr), "r" (newval)                 : "cc", "memory");    return ret;}#undef LPARX#undef CMPP#undef STPCX#elseextern "C" {    int q_atomic_test_and_set_int(volatile int *ptr, int expected, int newval);    int q_atomic_test_and_set_acquire_int(volatile int *ptr, int expected, int newval);    int q_atomic_test_and_set_release_int(volatile int *ptr, int expected, int newval);    int q_atomic_test_and_set_ptr(volatile void *ptr, void *expected, void *newval);    int q_atomic_increment(volatile int *);    int q_atomic_decrement(volatile int *);    int q_atomic_set_int(volatile int *, int);    void *q_atomic_set_ptr(volatile void *, void *);} // extern "C"#endifQT_END_HEADER#endif // POWERPC_QATOMIC_H