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- Here is a warning from michael about fp register usage:
-
- in my mathlib, i didn't save any floating point registers. This is
- safe for the sfp since all the arithmetics on the 881 are done in the
- lib functions. Only assembler programmers who do their own
- sfp-arithmetics have to save their fp-registers before calling a
- sfp-lib function. I should have mentioned that in the readme.
-
- Things are worse in the coprocessor lib, which is simply a translation of the
- sfp stuff, i.e. without saving any fpu registers. If -m68881 is set, *all*
- registers of the 881 must be declared
- -fcall-saved-fp0, ...-fp7, since i didn't save anything. This is meant as a
- workaround until the fix to the problem will be available. I'm going to modify
- my mathlib next weekend.
-
-