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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2011-03-16 20:05:06 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2011-03-16 20:05:06 +0000 |
| commit | 06dcaf09e6c0eae0b3a3c8d84adb663d03a53a4b (patch) | |
| tree | 931cf314d5a87d1d3dcd6e5c366b5ce58270a6aa /cpukit/score/include/rtems/score/basedefs.h | |
| parent | 2011-03-16 Joel Sherrill <joel.sherrill@oarcorp.com> (diff) | |
| download | rtems-06dcaf09e6c0eae0b3a3c8d84adb663d03a53a4b.tar.bz2 | |
2011-03-16 Jennifer Averett <jennifer.averett@OARcorp.com>
PR 1729/cpukit
* configure.ac, sapi/include/confdefs.h, sapi/src/exinit.c,
score/Makefile.am, score/preinstall.am,
score/cpu/i386/rtems/score/cpu.h, score/cpu/sparc/cpu_asm.S,
score/cpu/sparc/rtems/score/cpu.h,
score/include/rtems/score/basedefs.h,
score/include/rtems/score/context.h,
score/include/rtems/score/percpu.h, score/src/percpu.c,
score/src/thread.c, score/src/threadcreateidle.c: Add next step in
SMP support. This adds an allocated array of the Per_CPU structures
to support multiple cpus vs a single instance of the structure which
is still used if SMP support is disabled. Configuration support is
also added to explicitly enable or disable SMP. But SMP can only be
enabled for the CPUs which will support it initially -- SPARC and
i386. With the stub BSP support, a BSP can be run as a single core
SMP system from an RTEMS data structure standpoint.
* aclocal/check-smp.m4, aclocal/enable-smp.m4,
score/include/rtems/bspsmp.h, score/include/rtems/score/smplock.h,
score/src/smp.c, score/src/smplock.c: New files.
Diffstat (limited to 'cpukit/score/include/rtems/score/basedefs.h')
| -rw-r--r-- | cpukit/score/include/rtems/score/basedefs.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/cpukit/score/include/rtems/score/basedefs.h b/cpukit/score/include/rtems/score/basedefs.h index 6bb03459e6..b956806313 100644 --- a/cpukit/score/include/rtems/score/basedefs.h +++ b/cpukit/score/include/rtems/score/basedefs.h @@ -136,6 +136,19 @@ #endif /** + * The following defines a compiler specific attribute which informs + * the compiler that the method has no effect except the return value + * and that the return value depends only on parameters and/or global + * variables. + */ +#ifdef __GNUC__ + #define RTEMS_COMPILER_PURE_ATTRIBUTE \ + __attribute__ ((pure)) +#else + #define RTEMS_COMPILER_PURE_ATTRIBUTE +#endif + +/** * Instructs the compiler to issue a warning whenever a variable or function * with this attribute will be used. */ |