#ifndef _BITS_ATOMICITY_H
#define _BITS_ATOMICITY_H 1
#ifdef __SH4A__
typedef int _Atomic_word;
static inline _Atomic_word
__attribute__ ((__unused__))
__exchange_and_add (volatile _Atomic_word* __mem, int __val)
{
_Atomic_word __result;
__asm__ __volatile__
("0:\n"
"\tmovli.l\t@%2,r0\n"
"\tmov\tr0,%1\n"
"\tadd\t%3,r0\n"
"\tmovco.l\tr0,@%2\n"
"\tbf\t0b"
: "+m" (*__mem), "=r" (__result)
: "r" (__mem), "rI08" (__val)
: "r0");
return __result;
}
static inline void
__attribute__ ((__unused__))
__atomic_add (volatile _Atomic_word* __mem, int __val)
{
asm("0:\n"
"\tmovli.l\t@%1,r0\n"
"\tadd\t%2,r0\n"
"\tmovco.l\tr0,@%1\n"
"\tbf\t0b"
: "+m" (*__mem)
: "r" (__mem), "rI08" (__val)
: "r0");
}
#else
#include <bits/gthr.h>
#define _GLIBCPP_NEED_GENERIC_MUTEX
typedef int _Atomic_word;
namespace __gnu_cxx
{
extern __gthread_mutex_t _Atomic_add_mutex;
#ifndef __GTHREAD_MUTEX_INIT
extern __gthread_once_t _Atomic_add_mutex_once;
extern void __gthread_atomic_add_mutex_once();
#endif
}
static inline _Atomic_word
__attribute__ ((__unused__))
__exchange_and_add (volatile _Atomic_word* __mem, int __val)
{
#ifndef __GTHREAD_MUTEX_INIT
__gthread_once (&__gnu_cxx::_Atomic_add_mutex_once,
__gnu_cxx::__gthread_atomic_add_mutex_once);
#endif
_Atomic_word __result;
__gthread_mutex_lock (&__gnu_cxx::_Atomic_add_mutex);
__result = *__mem;
*__mem += __val;
__gthread_mutex_unlock (&__gnu_cxx::_Atomic_add_mutex);
return __result;
}
static inline void
__attribute__ ((__unused__))
__atomic_add (volatile _Atomic_word* __mem, int __val)
{
(void) __exchange_and_add (__mem, __val);
}
#endif
#endif