From b2db1f5c76855332bd52b2cfb02c4c4a84e38f7d Mon Sep 17 00:00:00 2001 From: Jan Dolezal Date: Thu, 20 Nov 2014 15:00:29 +0100 Subject: cpukit: basedefs: macro for packed attribute --- cpukit/score/include/rtems/score/basedefs.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/cpukit/score/include/rtems/score/basedefs.h b/cpukit/score/include/rtems/score/basedefs.h index 12480a8450..695ab8fa4f 100644 --- a/cpukit/score/include/rtems/score/basedefs.h +++ b/cpukit/score/include/rtems/score/basedefs.h @@ -197,6 +197,16 @@ #define RTEMS_COMPILER_UNUSED_ATTRIBUTE #endif +/** + * Instructs the compiler that a specific structure or union members will be + * placed so that the least memory is used. + */ +#if defined(__GNUC__) + #define RTEMS_COMPILER_PACKED_ATTRIBUTE __attribute__((packed)) +#else + #define RTEMS_COMPILER_PACKED_ATTRIBUTE +#endif + #if __cplusplus >= 201103L #define RTEMS_STATIC_ASSERT(cond, msg) \ static_assert(cond, # msg) -- cgit v1.2.3