[fpc-devel] OO rewrite - technical questions
DrDiettrich1 at aol.com
Tue Jul 20 16:11:01 CEST 2010
Michael Schnell schrieb:
> BTW what about GS ? If same is just restored after preemption, this
> could be used by the compiler to point to the Threadvar area.
Since it turned out that loading segment registers is very time
consuming on newer (i486+) processors, the memory management was changed
from segmented (16 bit) into paged (32 bit flat). Segment registers
never should be changed by an application, it should be left to the OS
process/thread scheduler and thread-API calls.
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