RTEMS | x86_64: Enable and add support for FP tasks (!95)

[Sebastian Huber (@sebhub)]

Sebastian Huber started a new discussion on cpukit/score/cpu/x86_64/include/rtems/score/cpu.h: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/95#note_108091

 >  
 >  #define CPU_SIMPLE_VECTORED_INTERRUPTS FALSE
 >  #define CPU_ISR_PASSES_FRAME_POINTER FALSE
 > -#define CPU_HARDWARE_FP FALSE
 > +#define CPU_HARDWARE_FP TRUE
 >  #define CPU_SOFTWARE_FP FALSE
 > -#define CPU_ALL_TASKS_ARE_FP FALSE
 > +#define CPU_ALL_TASKS_ARE_FP TRUE

I would like to get rid of the CPU_ALL_TASKS_ARE_FP at some point in time. Can't you simply add the FP context to Context_Control? This should be slightly more efficient.

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/95#note_108091
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