> Why not? It is never helpful to make flat statements without explaining
> your rationale.
We went through this several times before, this is why I didn't bother
giving an exhaustive answer.
The problem is that we decide, e.g., about the rounding mode by adding
-lieee to the link line. This makes the startup code use a different
value for the control word. But how would you do this if you don't
have the possibility to set the CW? Since nobody knows when the first
floating-point instruction is executed we cannot simply say "we make
it when necessary". Also, there is no way to find out whether a
certain program will use floating-point instructions at all.
The solution to this which I described several times before is to have
a system call which allows to tell the kernel which control word to
use once the process uses floating-point instructions. Then we can
delay constructing the FPU data structures.
-- Uli
---------------. drepper at gnu.org ,-. 1325 Chesapeake Terrace
Ulrich Drepper \ ,-------------------' \ Sunnyvale, CA 94089 USA
Cygnus Solutions `--' drepper at cygnus.com `------------------------
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