diff options
Diffstat (limited to 'cpukit/score/include/rtems/system.h')
| -rw-r--r-- | cpukit/score/include/rtems/system.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/cpukit/score/include/rtems/system.h b/cpukit/score/include/rtems/system.h index 22895adb25..6f3f04ec29 100644 --- a/cpukit/score/include/rtems/system.h +++ b/cpukit/score/include/rtems/system.h @@ -102,6 +102,17 @@ extern "C" { #endif /* + * The following macro is a compiler specific way to ensure that memory + * writes are not reordered around certian points. This specifically can + * impact interrupt disable and thread dispatching critical sections. + */ +#ifdef __GNUC__ + #define RTEMS_COMPILER_MEMORY_BARRIER() asm volatile("" ::: "memory") +#else + #define RTEMS_COMPILER_MEMORY_BARRIER() +#endif + +/* * The following are used by the POSIX implementation to catch bad paths. */ |