l4/pkg/l4util/include/ARCH-sparc/atomic_arch.h

   1 /**
   2  * \file
   3  * \brief SPARC specific implementation of atomic functions
   4  */
   5 /*
   6  * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
   7  *               Alexander Warg <warg@os.inf.tu-dresden.de>
   8  *     economic rights: Technische Universität Dresden (Germany)
   9  * This file is part of TUD:OS and distributed under the terms of the
  10  * GNU Lesser General Public License 2.1.
  11  * Please see the COPYING-LGPL-2.1 file for details.
  12  */
  13 #ifndef __L4UTIL__INCLUDE__ARCH_SPARC__ATOMIC_ARCH_H__
  14 #define __L4UTIL__INCLUDE__ARCH_SPARC__ATOMIC_ARCH_H__
  15
  16 #ifdef __GNUC__
  17
  18 #include <l4/sys/atomic.h>
  19
  20 EXTERN_C_BEGIN
  21
  22 #define __L4UTIL_ATOMIC_HAVE_ARCH_CMPXCHG32
  23 L4_INLINE int
  24 l4util_cmpxchg32(volatile l4_uint32_t * dest,
  25                  l4_uint32_t cmp_val, l4_uint32_t new_val)
  26 {
  27   return l4_atomic_cmpxchg((volatile long int *)dest, cmp_val, new_val);
  28 }
  29
  30 #define __L4UTIL_ATOMIC_HAVE_ARCH_CMPXCHG
  31 L4_INLINE int
  32 l4util_cmpxchg(volatile l4_umword_t * dest,
  33                l4_umword_t cmp_val, l4_umword_t new_val)
  34 {
  35   return l4_atomic_cmpxchg((volatile long int *)dest, cmp_val, new_val);
  36 }
  37
  38 #define __L4UTIL_ATOMIC_HAVE_ARCH_XCHG32
  39 L4_INLINE l4_uint32_t
  40 l4util_xchg32(volatile l4_uint32_t *dest, l4_uint32_t new_val)
  41 {
  42 //  return l4_atomic_xchg((volatile long int *)dest, new_val);
  43   asm volatile ("ta 0");
  44   return ~0;
  45 }
  46
  47 #define __L4UTIL_ATOMIC_HAVE_ARCH_XCHG
  48 L4_INLINE l4_umword_t
  49 l4util_xchg(volatile l4_umword_t *dest, l4_umword_t new_val)
  50 {
  51 //  return l4_atomic_xchg((volatile long int *)dest, new_val);
  52   asm volatile ("ta 0");
  53   return ~0;
  54 }
  55
  56 #define __L4UTIL_ATOMIC_HAVE_ARCH_ADD
  57 L4_INLINE void
  58 l4util_atomic_add(volatile long *dest, long val)
  59 {
  60   l4_atomic_add(dest, val);
  61 }
  62
  63 #define __L4UTIL_ATOMIC_HAVE_ARCH_INC
  64 L4_INLINE void
  65 l4util_atomic_inc(volatile long *dest)
  66 {
  67   l4_atomic_add(dest, 1);
  68 }
  69
  70 #define __L4UTIL_ATOMIC_HAVE_ARCH_INC32
  71 L4_INLINE void
  72 l4util_inc32(volatile l4_uint32_t *dest)
  73 {
  74   l4_atomic_add((volatile long int *)dest, 1);
  75 }
  76
  77 #define __L4UTIL_ATOMIC_HAVE_ARCH_DEC32
  78 L4_INLINE void
  79 l4util_dec32(volatile l4_uint32_t *dest)
  80 {
  81   l4_atomic_add((volatile long int *)dest, -1);
  82 }
  83
  84
  85 #define __L4UTIL_ATOMIC_HAVE_ARCH_INC32_RES
  86 L4_INLINE l4_uint32_t
  87 l4util_inc32_res(volatile l4_uint32_t *dest)
  88 {
  89   return l4_atomic_add((volatile long int *)dest, 1);
  90 }
  91
  92 #define __L4UTIL_ATOMIC_HAVE_ARCH_DEC32_RES
  93 L4_INLINE l4_uint32_t
  94 l4util_dec32_res(volatile l4_uint32_t *dest)
  95 {
  96   return l4_atomic_add((volatile long int *)dest, -1);
  97 }
  98
  99 EXTERN_C_END
 100
 101 #endif //__GNUC__
 102
 103 #endif /* ! __L4UTIL__INCLUDE__ARCH_SPARC__ATOMIC_ARCH_H__ */