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author | Jan Dolezal <dolezj21@fel.cvut.cz> | 2014-11-20 15:00:29 +0100 |
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committer | Gedare Bloom <gedare@rtems.org> | 2014-11-20 09:52:39 -0500 |
commit | b2db1f5c76855332bd52b2cfb02c4c4a84e38f7d (patch) | |
tree | 61be4525d519ddec7d55eb7ef96f6f5f371e1ab2 | |
parent | i386: GDTR manipulation functions parameters changed to use explicit width types (diff) | |
download | rtems-b2db1f5c76855332bd52b2cfb02c4c4a84e38f7d.tar.bz2 |
cpukit: basedefs: macro for packed attribute
-rw-r--r-- | cpukit/score/include/rtems/score/basedefs.h | 10 |
1 files changed, 10 insertions, 0 deletions
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) |