/******************************************************************************** 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 S390_QATOMIC_H#define S390_QATOMIC_H#include <QtCore/qglobal.h>QT_BEGIN_HEADER#define __CS_LOOP(ptr, op_val, op_string) ({				\	volatile int old_val, new_val;					\        __asm__ __volatile__("   l     %0,0(%3)\n"			\                             "0: lr    %1,%0\n"				\                             op_string "  %1,%4\n"			\                             "   cs    %0,%1,0(%3)\n"			\                             "   jl    0b"				\                             : "=&d" (old_val), "=&d" (new_val),	\			       "=m" (*ptr)	\			     : "a" (ptr), "d" (op_val),			\			       "m" (*ptr)	\			     : "cc", "memory" );			\	new_val;							\})#define __CS_OLD_LOOP(ptr, op_val, op_string) ({			\	volatile int old_val, new_val;					\        __asm__ __volatile__("   l     %0,0(%3)\n"			\                             "0: lr    %1,%0\n"				\                             op_string "  %1,%4\n"			\                             "   cs    %0,%1,0(%3)\n"			\                             "   jl    0b"				\                             : "=&d" (old_val), "=&d" (new_val),	\			       "=m" (*ptr)	\			     : "a" (ptr), "d" (op_val),			\			       "m" (*ptr)	\			     : "cc", "memory" );			\	old_val;							\})#ifdef __s390x__#define __CSG_OLD_LOOP(ptr, op_val, op_string) ({				\	long old_val, new_val;						\        __asm__ __volatile__("   lg    %0,0(%3)\n"			\                             "0: lgr   %1,%0\n"				\                             op_string "  %1,%4\n"			\                             "   csg   %0,%1,0(%3)\n"			\                             "   jl    0b"				\                             : "=&d" (old_val), "=&d" (new_val),	\			       "=m" (*ptr)	\			     : "a" (ptr), "d" (op_val),			\			       "m" (*ptr)	\			     : "cc", "memory" );			\	old_val;							\})#endifinline int q_atomic_test_and_set_int(volatile int *ptr, int expected, int newval){        int retval;        __asm__ __volatile__(                "  lr   %0,%3\n"                "  cs   %0,%4,0(%2)\n"                "  ipm  %0\n"                "  srl  %0,28\n"                "0:"                : "=&d" (retval), "=m" (*ptr)                : "a" (ptr), "d" (expected) , "d" (newval),		  "m" (*ptr) : "cc", "memory" );        if(retval) return 0;        else return 1;}inline int q_atomic_test_and_set_acquire_int(volatile int *ptr, int expected, int newval){        int retval;        __asm__ __volatile__(                "  lr   %0,%3\n"                "  cs   %0,%4,0(%2)\n"                "  ipm  %0\n"                "  srl  %0,28\n"                "0:\n"                "  bcr 15,0\n"                : "=&d" (retval), "=m" (*ptr)                : "a" (ptr), "d" (expected) , "d" (newval),		  "m" (*ptr) : "cc", "memory" );        if(retval) return 0;        else return 1;}inline int q_atomic_test_and_set_release_int(volatile int *ptr, int expected, int newval){        int retval;        __asm__ __volatile__(                "  bcr 15,0\n"                "  lr   %0,%3\n"                "  cs   %0,%4,0(%2)\n"                "  ipm  %0\n"                "  srl  %0,28\n"                "0:"                : "=&d" (retval), "=m" (*ptr)                : "a" (ptr), "d" (expected) , "d" (newval),		  "m" (*ptr) : "cc", "memory" );        if(retval) return 0;        else return 1;}inline int q_atomic_test_and_set_ptr(volatile void *ptr, void *expected, void* newval){        int retval;#ifndef __s390x__        __asm__ __volatile__(                "  lr   %0,%3\n"                "  cs   %0,%4,0(%2)\n"                "  ipm  %0\n"                "  srl  %0,28\n"                "0:"                : "=&d" (retval), "=m" (*reinterpret_cast<void * volatile *>(ptr))                : "a" (ptr), "d" (expected) , "d" (newval),		  "m" (*reinterpret_cast<void* volatile *>(ptr)) : "cc", "memory" );#else        __asm__ __volatile__(                "  lgr   %0,%3\n"                "  csg   %0,%4,0(%2)\n"                "  ipm  %0\n"                "  srl  %0,28\n"                "0:"                : "=&d" (retval), "=m" (*reinterpret_cast<void * volatile *>(ptr))                : "a" (ptr), "d" (expected) , "d" (newval),		  "m" (*reinterpret_cast<void* volatile *>(ptr)) : "cc", "memory" );#endif        if(retval) return 0;        else return 1;}inline int q_atomic_increment(volatile int *ptr){ return __CS_LOOP(ptr, 1, "ar"); }inline int q_atomic_decrement(volatile int *ptr){ return __CS_LOOP(ptr, 1, "sr"); }inline int q_atomic_set_int(volatile int *ptr, int newval){    return __CS_OLD_LOOP(ptr, newval, "lr");}inline void *q_atomic_set_ptr(volatile void *ptr, void *newval){#ifndef __s390x__    return (void*)__CS_OLD_LOOP(reinterpret_cast<volatile long*>(ptr), (int)newval, "lr");#else    return (void*)__CSG_OLD_LOOP(reinterpret_cast<volatile long*>(ptr), (long)newval, "lgr");#endif}QT_END_HEADER#endif // S390_QATOMIC_H