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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-02-17 10:00:43 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-02-17 13:42:53 +0100 |
| commit | 8d6e6eebedc1b70d8ae6c1dac13393b9e9c1a3b1 (patch) | |
| tree | 3dc2d588f6bf8e0ea9c2725692e54f19f91f965a /cpukit/score/src/threadstartmultitasking.c | |
| parent | score: Add _CPU_SMP_Prepare_start_multitasking() (diff) | |
| download | rtems-8d6e6eebedc1b70d8ae6c1dac13393b9e9c1a3b1.tar.bz2 | |
score: Fix FP context restore via _Thread_Handler
After a context switch we end up in the second part of
_Thread_Dispatch() or in _Thread_Handler() in case of new threads. Use
the same function _Thread_Restore_fp() to restore the floating-point
context. It makes no sense to do this in _Thread_Start_multitasking().
This fixes also a race condition in SMP configurations.
Update #2268.
Diffstat (limited to 'cpukit/score/src/threadstartmultitasking.c')
| -rw-r--r-- | cpukit/score/src/threadstartmultitasking.c | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/cpukit/score/src/threadstartmultitasking.c b/cpukit/score/src/threadstartmultitasking.c index 7fbdd84dbc..838cf2352a 100644 --- a/cpukit/score/src/threadstartmultitasking.c +++ b/cpukit/score/src/threadstartmultitasking.c @@ -37,28 +37,6 @@ void _Thread_Start_multitasking( void ) heir = _Thread_Get_heir_and_make_it_executing( cpu_self ); - /* - * Get the init task(s) running. - * - * Note: Thread_Dispatch() is normally used to dispatch threads. As - * part of its work, Thread_Dispatch() restores floating point - * state for the heir task. - * - * This code avoids Thread_Dispatch(), and so we have to restore - * (actually initialize) the floating point state "by hand". - * - * Ignore the CPU_USE_DEFERRED_FP_SWITCH because we must always - * switch in the first thread if it is FP. - */ -#if ( CPU_HARDWARE_FP == TRUE ) || ( CPU_SOFTWARE_FP == TRUE ) - /* - * don't need to worry about saving BSP's floating point state - */ - - if ( heir->fp_context != NULL ) - _Context_Restore_fp( &heir->fp_context ); -#endif - _Profiling_Thread_dispatch_disable( cpu_self, 0 ); #if defined(RTEMS_SMP) |